Raena Ferrer Calubaquib is an associate in the New York office of Gibson, Dunn & Crutcher.  She practices with the firm’s Litigation Department.  Raena advises clients in a variety of industries on high-stakes legal matters, including investigations, enforcement actions, and complex litigation in trial and appellate courts across the country.  Raena’s pro bono practice includes voting rights, immigration, reproductive justice, and capital defense work. 

Raena externed and clerked for the Honorable Gregory H. Woods of the United States District Court for the Southern District of New York and clerked for the Honorable Myrna Pérez of the United States Court of Appeals for the Second Circuit.

Raena earned her law degree in 2019, with pro bono distinction, from the University of California, Berkeley, School of Law.  While in law school, Raena participated in Berkeley Law’s State and Local Impact Litigation Practicum, was an Articles Editor for the Berkeley Business Law Journal and the Berkeley Journal of Gender, Law & Justice, and was an executive board member of the Boalt Hall Women’s Association.  She served as a law clerk for the United States Attorney’s Office for the Northern District of California and interned with the United States Commission on Civil Rights.

Raena earned her undergraduate degree from the University of California, Santa Cruz.  Prior to attending law school, Raena worked for a prominent real estate technology company and the American Civil Liberties Union.

Raena is admitted to practice law in the State of California and the State of New York.

Lily Löffler is an English qualified lawyer in the London office of Gibson, Dunn & Crutcher where she currently practices in the firm’s Finance, Transportation and Space, and Business Restructuring and Reorganization Practice Groups.

Her practice focuses on cross-border leveraged and acquisition finance and restructurings, along with asset finance transactions, focused on aircraft financing and leasing. Lily acts for a range of market participants from borrowers to lenders, sponsors, creditors and investors.

She trained at Gibson Dunn before qualifying as an associate at the firm.

 

Relevant experience includes advising:

  • Sculptor Capital Management on its purchase of a large portfolio of aircraft assets from various counterparties.
  • Natixis in relation to a $130 million term loan facility to finance new engines, including sub-leasing structures and loan syndication. 
  • Various airline lessors and financiers in connection with multiple secured aircraft financings and trades.
  • Citibank and other financing banks with respect to a shipping portfolio financing program of up to $2 billion.
  • BNP Paribas and Sumitomo Mitsui Banking Corporation in connection with the GAEL II (Global Aviation Equipment Leasing) aviation fund to acquire a portfolio of 8 aircraft from SMBC Aviation Capital.
  • A leading investment bank in connection with a multi-billion revolving credit facility secured by shares, aircraft assets, and landing slots.
  • International syndicates on numerous secured portfolio aircraft and engine financings, and various airline lessors in connection with aircraft and engine trades coupled with new financings and/or release of existing financing.
  • Deutsche Bank, New York, in relation to a US$150 million loan facility for an aircraft leasing company, backed by 21 commercial passenger aircraft and individual engines on operating leases with 14 different airlines in 13 different jurisdictions.
  • Abelo in connection with aircraft trades and financings.
  • Stonebriar Commercial Finance LLC as lessor in relation to the financing of private jet aircraft and substitution of security packages in connection therewith, and in connection with the entry into a joint venture to finance the acquisition and operation of a pool of private jet aircraft.
  • BBAM in relation to its enhanced equipment trust certificate financing backed by various Delta aircraft.
  • Deutsche Bank, New York, in relation to various financings in respect of commercial aircraft and engines (including bilateral and portfolio facilities).
  • Flexjet LLC in connection with a collateral substitution of various commercial aircraft.
  • Various lender entities on refinancing and substituting security packages.
  • Various aircraft lessors in relation to the entry into and amendment of operating leases with various lessees.
  • Lender in connection with the entry into a term loan agreement to finance a pool of ca. 40 aircraft.
  • Liberty Hall Capital Partners and Dunlop Aircraft Tyres Limited in connection with various refinancing and equity raises.

Zhiyao Li is an of counsel in the Beijing office of Gibson Dunn. He is a member of the firm’s Mergers & Acquisitions and Private Equity Practice Groups. Zhiyao advises global and Asian companies and investment funds on cross-border M&A transactions, strategic acquisitions and investments, private equity transactions, pre-IPO financings, joint ventures, going private transactions, PIPEs, and other securities and general corporate matters. He also advises clients on cross-border compliance and regulatory matters.

Zhiyao is recognized as a recommended lawyer for Corporate (including M&A) by The Legal 500 Asia Pacific.

Prior to joining Gibson Dunn, Zhiyao worked at a major Chinese TMT company as a senior legal counsel in Beijing and at two other leading international law firms as an associate in Hong Kong and Beijing.

Zhiyao received his Juris Doctor in 2016 from Georgetown University Law Center, where he was a member of the Dean’s List. While in law school, he served as a judicial intern to the Honorable Stefan R. Underhill in the U.S. District Court for the District of Connecticut and a legal extern at the Federal Trade Commission and the Financial Industry Regulatory Authority. Zhiyao received his Bachelor of Arts in 2013 from Beijing Foreign Studies University.

Zhiyao is admitted to practice in New York. He is native in Mandarin and fluent in English.

Representative Matters*

  • The Special Committee of Chindata, one of China’s largest data center providers, in its US$3.2 billion take-private transaction by a buyer consortium led by Bain Capital.
  • The Special Committee of Dada Nexus Limited in the company’s going-private transaction by an affiliate of JD.com, Inc., valuing the company at US$520 million.
  • The Special Committee of Bright Scholar Education Holdings Limited in the company’s going-private transaction.
  • The buyer consortium in the going-private transaction of O2Micro International Limited.
  • CPE in its sale of a majority stake in Acotec, a Chinese medical technology company publicly listed in Hong Kong, to Boston Scientific, through a US$520 million partial offer.
  • Alcon in its equity investment in and product license-out to Ocumension, a Chinese ophthalmic pharmaceutical platform company publicly listed in Hong Kong.
  • Tencent in various matters, including:
    • investment in the Series F funding round of Kuaishou Technology as the lead investor and other pre-IPO equity investments in multiple companies;
    • strategic investment in JD.com and renewal of their existing strategic cooperation agreement;
    • PIPE investment in Pinduoduo.
  • GOJEK in various matters, including:
    • business combination with Tokopedia to form GoTo Group;
    • investments by Facebook, PayPal, Google, Tencent and other investors in GoPay;
    • Series F funding round led by Google, JD.com and Tencent.
  • ADC Therapeutics in its joint venture with Overland Pharmaceuticals.
  • Cornell Capital in its investment in Lorom.
  • Heineken in its strategic partnership with China Resources.
  • Unitas Capital in the sale of Jiahao Foods to Huabao International Holdings.
  • Temasek in multiple investments in private companies.
  • A major French agricultural company on establishing a joint venture in China.
  • A leading Chinese internet company in its joint venture with a global automobile company.
  • A consortium consisting of a private equity fund and a pharmaceutical company in a bid for the acquisition of a leading international pharmaceutical company’s China business.
  • A leading Chinese household product company in a bid for the acquisition of a household product company in the U.S.
  • A leading Chinese internet company in its participation in a consortium to bid for the acquisition of a leading international wholesale company’s Chinese business.
  • A global financial services company in its joint venture with a Chinese online payment company.

* Includes matters handled prior to joining Gibson Dunn.

Arnold Pun is an of counsel in Hong Kong. He is a member of the Litigation Practice Group.

Arnold advises international financial institutions on a wide range of contentious and non-contentious regulatory issues. He has advised clients on significant regulatory investigations relating to sponsor misconduct, mis-selling of investment products, fraud and market misconduct in Hong Kong and the wider Asia-Pacific region. Arnold also advises clients on complex non-contentious regulatory matters, with a particular focus on fintech, anti-money laundering, sales and trading, and matters relating to the Securities and Futures Ordinance (SFO) and the Banking Ordinance. He also advises on securities and futures licensing applications and financial market misconduct more broadly.

Arnold is recognized as a recommended lawyer for Regulatory by The Legal 500 Asia Pacific.

Prior to joining Gibson Dunn, Arnold practiced at the Hong Kong offices of international law firms, with experience in advising on financial regulatory investigations and enforcement actions.

He earned his Juris Doctor (with First Class Honours) in 2012 from the University of Hong Kong and his undergraduate degree (with First Class Honours) in 2008 from the London School of Economics and Political Science. Arnold is admitted to practice in Hong Kong and is fluent in English and spoken Cantonese and Mandarin.

Andrew Cheng is an of counsel in Hong Kong. He is a member of the firm’s Litigation Practice Group.

Andrew has broad experience in civil litigation and dispute resolution. He advises multinational companies, high-net-worth individuals, financial institutions, professional trustees and administrators in a wide range of disputes including contractual, trust, shareholder, estate administration, and private wealth disputes. Andrew regularly represents clients in complex, high-stakes proceedings before the Hong Kong courts and arbitral tribunals, and has handled a wide variety of interlocutory applications (including applications for urgent injunctive relief) and trials.

Prior to joining Gibson Dunn, Andrew trained and practiced at a magic circle law firm. Andrew received his Bachelor of Commerce (majoring in Finance) and Bachelor of Laws with First Class Honours from the University of Sydney.

Andrew is admitted to practice in Hong Kong and New South Wales, Australia. He is fluent in English, Cantonese and Mandarin.

Scott Hvidt is a partner in the Dallas office of Gibson, Dunn & Crutcher. He practices in the firm’s Litigation Department and is a member of the Antitrust and Competition Practice Group. He maintains a broad-based antitrust and trial practice, including litigation in state and federal courts, merger and acquisition investigations and trials, and antitrust counseling.

Scott has experience in a wide range of antitrust and business litigation matters in both state and federal courts. He has represented clients in various cases involving class actions, antitrust claim, shareholder derivative actions, securities fraud, contract disputes, merger and acquisition litigation, property rights disputes, and tortious interference claims. Scott has significant experience managing sophisticated clients through all stages of legal disputes: from advise and business strategy surrounding legal questions to trial and appeal. Scott proudly maintains an active pro bono practice.

Scott has been recognized by Best Lawyers: Ones to Watch® in America for Litigation-Antitrust (2022-2025), and D Magazine Best Lawyers Under 40 (2025).

Representative Matters Include

  • Advised SES in securing clearance from DOJ for the acquisition of Intelsat, a global satellite competitor.
  • Key member of team representing LIV Golf and several professional golfers in major antitrust litigation against the PGA Tour and related issues. 
  • Key member of trial team representing CHS that secured district court order rejecting the FTC’s attempt to enjoin Novant’s acquisition of two Charlotte hospitals from CHS.
  • Key member of the trial team that defeated the DOJ’s challenge to AT&T’s $85.4 billion purchase of Time Warner.
  • Secured summary judgment on behalf of KidKraft and MidOcean Partners, and a unanimous affirmance by the Eleventh Circuit, on monopolization and unfair competition claims brought by a disgruntled former distributor.
  • Represents T-Mobile in defending putative class action antitrust claims challenging its acquisition of Sprint.
  • Represents Nestle USA in defending X Corp.’s antitrust lawsuit relating to advertisers reducing ads on Twitter
  • Represented Delta Air Lines in a widely publicized dispute over Delta’s continued access to Dallas’s Love Field airport that resulted in Delta securing access to the airport.
  • Represented Energy Transfer in successfully resolving contentious state court antitrust competitor challenge.
  • Represents Southern Methodist University in business dispute in defense of its amendment to its Articles of Incorporation.
  • Represents Tenet Healthcare in deceptive and unfair trade practices litigation against The Leapfrog Group.
  • Represented Welltower in complex breach of contract and business dispute in Dallas County District Court and secured successful resolution. 
  • Represented Oxley Leasing North Loop, LLC in property dispute against the City of Dallas and-secured summary judgment victory and final judgment in Dallas County District Court. 
  • Represented Cal-Maine Foods, the largest shell egg producer in the United States, in highly complex federal antitrust multi-district litigation.
  • Represented investment entity in complex and contentious securities litigation in Dallas County District Court and secured favorable resolution. 
  • Represented major law firm in successful defeat of motion to disqualify in high profile intellectual property litigation. 
  • Represented major law firm in successful defeat of variety of claims on summary judgment in Dallas County District Court. 
  • Represents and has represented several other clients in business disputes in federal court and state courts. 
  • In coordination with Advocates for Community Transformation, represented concerned West and South Dallas citizens in multiple litigations and private disputes to protect them and their neighborhoods against dangerous nuisances.
  • Participated in and graduated from the Emerging Leaders in Philanthropy program with the Communities Foundation of Texas (2019–2020).

Prior to joining Gibson Dunn, Scott served as a law clerk to the Honorable A. Joe Fish of the United States District Court for the Northern District of Texas. Before entering law school, he worked as a litigation paralegal in the New York office of DLA Piper LLP and managed a two-week arbitration.

In 2015, Scott graduated from Columbia Law School, where he earned the James Kent academic distinction. He received the Julius Silver Foundation Award for best student note for Columbia’s Science and Technology Law Review. Scott also served as the Executive Articles Editor for Columbia’s Science and Technology Law Review. While in law school, he worked as an extern for the Honorable Debra Livingston of the United States Court of Appeals for the Second Circuit, and worked for the Lawyering in the Digital Age Clinic, where he represented a homeless disabled man in his successful appeal for supplemental security income.

Scott received his Bachelor of Arts in History from Princeton University, where he wrote for the sports section of The Daily Princetonian, played on the varsity men’s water polo team that took third place in the 2009 NCAA Final Four, and received the Scott Roche Award as a member of that team. Scott is happily married to his wife Jane and has four children (a son and three daughters). 

He is a member of the State Bar of Texas.

Andrew Nahom is an associate in the San Francisco office of Gibson Dunn. He practices in the firm’s Litigation Department, with a focus on antitrust and competition law.

Andrew earned his JD from Stanford Law School. During law school, he served as Managing Editor of the Stanford Law Review and worked in the Stanford Religious Liberty Clinic. Prior to law school, Andrew earned a BA in English from Cornell University, with a concentration in Medieval Literature.

Andrew is admitted to practice in California.

Natasha Babazadeh is a litigation associate in the Los Angeles office of Gibson, Dunn & Crutcher. She is a member of the firm’s Appellate & Constitutional Law, Privacy & Cybersecurity, and Technology Litigation practice groups.

Natasha has extensive experience in appellate advocacy and working on privacy and data security matters. From 2020 to 2024, Natasha served as an Attorney in the Appellate Section of the U.S. Department of Justice’s Civil Rights Division, where she drafted dozens of appellate briefs and argued before federal courts of appeals across the country. She also received the Department’s John Marshall award for outstanding participation in litigation for a housing case involving sex discrimination that resulted in a landmark $4.5 million settlement. And she led the Civil Rights Division’s Enforcement Committee on civil rights matters related to artificial intelligence. Prior to that, Natasha clerked on the Sixth Circuit Court of Appeals for the Honorable Jane B. Stranch and on the Northern District of Illinois for the Honorable Harry D. Leinenweber. And she served as the Appellate Advocacy Fellow with the Electronic Privacy Information Center (EPIC), where she drafted appellate briefs on privacy and data security matters.

Natasha received her law degree in 2017 from the UCLA School of Law. While in law school, she served as the Editor-in-Chief of the Journal of International Law and Foreign Affairs and as the Founder and President of the Data Governance and Technology Association of Law (DGTAL). She also received her Bachelor of Arts degree summa cum laude from New York University, where she studied international politics and human rights and received the NYU President’s Service Award.

Natasha is a member of the State Bar of California and New York. She is admitted to practice law before the United States Courts of Appeals for the First, Second, Third, Fourth, Fifth, Sixth, Seventh, Eighth, Ninth, Tenth, and D.C. Circuits, as well as before the District Court for the Central District of California.

A.J. Frey is a partner in the Washington, D.C. and New York offices of Gibson Dunn. He is a member of the Investment Funds Practice Group.

A.J.’s practice focuses on the formation and operation of private investment funds across a variety of fund strategies, including private equity, growth equity, venture capital, credit and real asset funds. In addition to fund formation, he has significant experience advising on secondaries transactions, the acquisition and sale of minority stakes in fund sponsors, as well as spin-outs of fund businesses and management teams. A.J. frequently works with sponsors seeking to establish private funds for the first time. He also advises investment firms on their operation, regulation and internal governance arrangements.

A.J. has been recognized as a leading lawyer by:

  • Lawdragon “500 X – The Next Generation” in 2023
  • Private Client Global Elite as “One to Watch” in 2017 and 2018

A.J.’s representative clients include:

  • Dextra Partners
  • Halifax Group
  • Liberty Hall Capital Partners
  • Lupa Systems
  • Madison River Capital
  • Main Street Advisors
  • MidOcean Partners
  • Motive Partners
  • NVIDIA
  • Otro Capital
  • OA Private Capital
  • Point72
  • SC Holdings
  • StepStone Group
  • and Wafra, among others.

A.J. graduated summa cum laude from Washington and Lee University School of Law, where he received the John W. Davis Prize for Law for the highest cumulative grade point average, served as managing editor of the Washington and Lee Law Review, and was elected to the Order of the Coif. He earned a Bachelor of Arts from the University of Virginia.

Other relevant information about A.J. include:

  • Prior to joining Gibson Dunn, A.J. served as General Counsel of Greenspring Associates, where he managed the legal function of a more than $13 billion AUM diversified venture capital platforms across direct, secondary, fund-of-fund and bespoke investment strategies.
  • A.J. is active in a number of community organizations, including serving on the Benefactors Society Board for the College Foundation of the University of Virginia.
  • A.J. is admitted to practice in New York and the District of Columbia.

Erin Kramer is a litigation associate in the San Francisco office of Gibson, Dunn & Crutcher LLP.

She earned her J.D. from the University of California, Berkeley, School of Law, where she was elected to the Order of the Barristers. In law school, Erin was an Associate Editor of the California Law Review, a finalist in Berkeley’s Halloum Negotiation Competition, a quarterfinalist in the McBaine Moot Court Competition, an extern for the United States District Court for the Northern District of California, and a research assistant to Federal Courts and Constitutional Law professor Amanda Tyler.

Erin earned her B.A. in Mandarin and Political Science from Vanderbilt University. Between college and law school, she worked at a legal tech company in San Francisco and spent two years teaching English in Taiwan and Spain.

Erin is admitted to practice law in the State of California.

Jenny Chen is an associate in the San Francisco office of Gibson Dunn, where she currently practices in the firm’s Corporate group, focusing on Securities Regulation and Corporate Governance and Capital Markets matters.

Jenny received her law degree and a Certificate in Business Law from the University of California, Berkeley, School of Law in 2025. Jenny received her Bachelor of Arts degree in Economics and a minor in Business from Rice University in 2018.

She is admitted to practice law in the State of California.

Sydney Colopy is an associate in the Washington, D.C. office of Gibson Dunn. She currently practices in the firm’s Corporate Department.

Sydney earned her Juris Doctor, cum laude, from Duke University School of Law in 2025, where she served as a Research Editor of Duke Law Journal and received the James S. Bidlake Memorial Award for Superior Achievement in Legal Analysis, Research, and Writing.

Sydney graduated magna cum laude from Duke University in 2019 with a Bachelor of Arts in Public Policy and French.

Lucas Townsend is a litigation partner in the Washington, D.C. office, and a member of the firm’s Appellate and Constitutional Law, Administrative Law, Class Actions, and Intellectual Property Practice Groups.

Lucas focuses his practice on appellate, administrative law, and complex litigation matters. He regularly litigates constitutional and statutory issues in the Supreme Court of the United States and courts of appeals around the country; represents clients in challenging and defending regulatory action by administrative agencies under the Administrative Procedure Act; and defends clients in high-stakes commercial disputes.

Lucas’s extensive experience includes representing the world’s largest online retailer in various ligation matters concerning COVID-19 safety and arbitration issues; representing educational institutions in litigation involving the U.S. Department of Education; representing the holder of a $1.2 billion judgment against the Republic of Venezuela in proceedings before the Supreme Court, D.C. Circuit, Third Circuit, and District of Delaware; representing a bondholder and a bond insurer before the Supreme Court in constitutional litigation arising from Puerto Rico’s bankruptcy; serving as appellate counsel for the world’s largest social networking website and drafting successful briefing in significant patent noninfringement appeals; and representing a national hospital network in litigation resulting in a $60 million reduction in a jury’s punitive damages award.

Lucas’s representative matters include:

  • Representing a shipping company in ongoing administrative litigation against the Maritime Administration. Matson Navigation Co. v. U.S. Department of Transportation, __ F.4th __, 2023 WL 5209552 (D.C. Cir. Aug. 15, 2023).
  • Successfully representing an automobile manufacturer in a regulatory appeal before the Eleventh Circuit. Environmental Protection Commission of Hillsborough County, Fla. v. Mercedes Benz USA, LLC, 2023 WL 4678978 (11th Cir. July 21, 2023).
  • Representing National Association of Manufacturers in defense of the Securities and Exchange Commission’s 2020 rule on proxy voting advice. Institutional Shareholder Services, Inc. v. SEC, No. 1:19-cv-3275 (D.D.C.)
  • Successfully representing utilities and merchant transmission facilities before the D.C. Circuit in litigation concerning cost allocations for $1.3 billion in upgrades to the northern New Jersey electricity grid. Consolidated Edison Co. of New York, Inc. v. FERC, 45 F.4th 265 (D.C. Cir. 2022).
  • Successfully representing a major pharmacy benefits manager in a mass-action arbitration appeal to the Third Circuit. Robert D. Mabe, Inc. v. OptumRX, 43 F.4th 307 (3d Cir. 2022).
  • Successfully representing an online retailer in litigation concerning COVID-19 safety. People v. Amazon.com, 205 A.D.3d 485 (N.Y. Sup. Ct. App. Div. 1st Dep’t 2022).
  • Author of successful briefing in high-profile arbitration appeal relating to Amazon Flex drivers. Harper v. Amazon, 12 F.4th 287 (3d Cir. 2021).
  • Representing world’s largest provider of leveraged and inverse ETFs and mutual funds in comments to the Securities and Exchange Commission in derivatives rulemaking that resulted in withdrawal of proposed rule.
  • Successfully representing an automobile manufacturer in an arbitration appeal before the Third Circuit. In re Mercedes-Benz Emissions Litig., 797 F. App’x 695 (3d Cir. 2020).
  • Successfully arguing a constitutional challenge to a territorial law that restricted voting in an election on the basis of race. Davis v. Guam, 932 F.3d 822 (9th Cir. 2019), cert. denied, No. 19-827 (U.S. 2020).
  • Persuading the U.S. Solicitor General to confess error before the U.S. Supreme Court in an EEOC enforcement action. BNSF Ry. Co. v. EEOC, No. 18-1139 (U.S. 2019).
  • Successfully representing a major health insurer in an administrative-law appeal to the Kentucky Supreme Court that resulted in a landmark precedent on constitutional standing. Commonwealth of Kentucky v. Sexton, 566 S.W.3d 185 (Ky. 2018), cert. denied, No. 18-1446 (U.S. 2019).
  • Successfully representing an American Indian tribe and its instrumentalities in a challenge to a Department of Housing and Urban Development mortgagee letter that resulted in the grant of a preliminary injunction and a withdrawal of the mortgagee letter by HUD. Cedar Band of Paiutes v. U.S. Dep’t of Housing and Urban Development, 2019 WL 3305919 (D. Utah July 23, 2019).
  • Representing a corporate defendant in ongoing litigation in Delaware Chancery Court over the governance of student loan trusts.
  • Representing a mortgage lender in a groundbreaking constitutional and administrative law challenge to a Consumer Financial Protection Bureau enforcement action, in which we ultimately overturned a $109 million penalty against our client on administrative law grounds. PHH Corp. v. CFPB, 881 F.3d 75 (D.C. Cir. 2018) (en banc).

Before joining the firm, Lucas served as a law clerk to the Honorable Samuel A. Alito, Jr. of the Supreme Court of the United States, the Honorable Maryanne Trump Barry of the United States Court of Appeals for the Third Circuit, and the Honorable Harold A. Ackerman of the United States District Court for the District of New Jersey. Lucas also served as an Attorney Adviser in the United States Department of Justice, National Security Division, from 2007 to 2009.

Lucas was recently named a “Future Star” by Benchmark Litigation.

Lucas graduated magna cum laude from the Seton Hall University School of Law. He received an undergraduate degree in biochemistry from Cornell University.

Jacob Spencer is a partner in the Washington, D.C. office of Gibson Dunn. He practices in the firm’s Appellate and Constitutional Law, Transnational Litigation, and Administrative Law and Regulatory Practice Groups. His practice focuses on high-stakes litigation at every stage of the judicial system, from initial pleadings to the Supreme Court. Jacob has significant experience representing and advising clients in the technology, telecommunications, food and beverage, transportation, energy, and securities industries. Jacob was recognized as a “Future Star” by Benchmark Litigation, and as a “Rising Star” in Telecommunications by Law360.

Representative matters:

  • CC/Devas (Mauritius) Limited v. Antrix Corp. Ltd.: Representing petitioners in U.S. Supreme Court in international arbitration enforcement matter involving whether foreign sovereigns are entitled to due process under the U.S. Constitution.
  • Twitter, Inc. v. Taamneh: Represented Meta Platforms in securing unanimous Supreme Court decision holding that social media companies are not liable under the Anti-Terrorism Act for providing routine, arms-length services.
  • Slack Technologies v. Pirani: Obtained unanimous Supreme Court decision limiting liability under Section 11(a) of the Securities Act.
  • National Association of Broadcasters v. Prometheus Radio Project: Lead author of certiorari petition and merits briefing on behalf of NAB and industry petitioners in successful defense of the FCC’s rule loosening broadcast ownership restrictions.
  • DraftKings, Inc. v. Hermalyn: Obtained a preliminary injunction and First Circuit affirmance enforcing nationwide non-compete against former executive.
  • League of Women Voters of New Hampshire v. Kramer: Defeated preliminary injunction on behalf of Lingo Telecom in Voting Rights Act matter arising from deepfake “robocalls” during the New Hampshire presidential primary.
  • M.P. v. Meta Platforms, Inc.: Argued on behalf of Meta Platforms in Fourth Circuit in defending district court judgment that Section 230 of the Communications Decency Act bars claims arising out of offline third-party violence.
  • Aldea-Tirado v. PricewaterhouseCoopers, LLP: Successfully argued in First Circuit in upholding PricewaterhouseCoopers arbitration agreement against contract formation and unconscionability challenge.
  • Coubaly v. Cargill: Represents Nestlé as lead author of merits briefs in district court and D.C. Circuit defending members of the cocoa industry against claims under the Trafficking Victims Protection Reauthorization Act.
  • Indiana Rail Road Co. v. Illinois Commerce Commission: Lead author of complaint and summary judgment motion on behalf of railroad industry in successful preemption challenge to state minimum crew size law.

Jacob clerked for U.S. Supreme Court Justice Clarence Thomas, Judge Diarmuid O’Scannlain of the U.S. Court of Appeals for the Ninth Circuit, and Judge Jerry E. Smith of the U.S. Court of Appeals for the Fifth Circuit.

Jacob received his law degree, magna cum laude, from Harvard Law School in 2012, where he was Deputy Editor-in-Chief of the Harvard Journal of Law and Public Policy from 2011-2012. He received his undergraduate degree in classics and religious studies, magna cum laude, from Washington & Lee University in 2006.

Jacob is admitted to practice law in the Commonwealth of Virginia and the District of Columbia.

Abram Dorrough is an associate in the Houston office of Gibson Dunn and is a member of the firm’s Tax Practice Group. His practice involves advising clients on federal income taxation issues related to corporations, partnerships, real estate investment trusts (REITs), and tax-exempt organizations.

Abram earned his Juris Doctor, cum laude, from the J. Reuben Clark Law School at Brigham Young University, where he served as Executive Editor of the Brigham Young University Law Review and was a member of the BYU Tax Law Society and the BYU Corporate Law Society. While in law school, he interned with Judge David Nuffer of the United States District Court for the District of Utah and with Chief Justice Matthew Durrant of the Utah Supreme Court.

Before law school, he earned a Bachelor of Science in Economics, cum laude, from Brigham Young University, and he worked for several years as a federal law enforcement officer.

Abram speaks Spanish, French, and German, and he is a student of several other languages.

He is admitted to practice in the State of Texas.

Allison Mather is a litigation associate in the Orange County office of Gibson, Dunn & Crutcher.  She is a member of the firm’s Labor and Employment, Class Actions, and Trial practice groups.  Her practice centers on class actions and complex litigation at both the trial and appellate levels, with a focus on worker misclassification, wage and hour, and technology-related litigation.  She has represented clients in class actions, collective actions, representative actions under the California Private Attorneys General Act, and sensitive individual actions alleging employment-related claims.

Allison has been deeply involved in some of the firm’s most significant worker misclassification matters spanning all major worker classification frameworks, representing leading gig-economy, technology, logistics, and consumer services companies.  She also advises clients on compliance issues relating to worker classification and arbitration agreements, and she has helped develop forward-looking business strategies designed to minimize exposure while preserving operational flexibility. 

Allison has significant experience at all stages of litigation, including trial work, and she has served as a core member of multiple trial teams for both bench and jury trials.  In addition to her trial experience, Allison frequently leads discovery efforts in complex, data-intensive cases.  She has substantial experience managing large-scale document collections and productions, drafting and negotiating written discovery, handling discovery disputes, and developing and implementing e-discovery strategy. 

Allison graduated summa cum laude and as Salutatorian from Pepperdine University School of Law in 2020, where she was elected to the Order of the Coif.  While in law school, she served as the Business Production Editor for the Pepperdine Law Review, a Teaching Assistant for Legal Research and Writing, and a Research Assistant.  Allison also served as a judicial extern for the Honorable Sandra S. Ikuta of the United States Court of Appeals for the Ninth Circuit.  As an advocate in Pepperdine’s Ninth Circuit Appellate Advocacy Clinic, she fully briefed and argued a case before the Ninth Circuit Court of Appeals.

She graduated magna cum laude from Texas Christian University in 2017 with a Bachelor of Science in Political Science with a Business minor and Bachelor of Arts in Writing and French.  She graduated with distinction and was elected to Phi Beta Kappa.   

Allison is admitted to practice law in the State of California, the United States Court of Appeals for the First Circuit, and in the United States District Court for the Central District of California.

Minae Seog is an associate in the Palo Alto office of Gibson Dunn, where she currently practices in the firm’s Transactional Department.

Minae earned her law degree from the University of California, Davis School of Law, where she served as an editor for the UC Davis Law Review and was elected to the Order of the Coif. Minae received her B.A. in Government from Dartmouth College, and her M.A. in Urban Education Policy & Administration from Loyola Marymount University. Prior to law school, she worked as a middle school math teacher.

Minae is admitted to practice in the State of California.

Matthew Rozen is a partner in the Washington, D.C. office of Gibson Dunn. He practices in the firm’s Appellate and Constitutional Law and Administrative Law and Regulatory Practice Groups. His practice includes litigating and enforcing arbitral awards and judgments against foreign states under the Foreign Sovereign Immunities Act, and representing clients in the health insurance and energy industries in high-stakes appeals.

Matthew has presented oral argument before the United States Court of Appeals for the Third Circuit and the Arizona Court of Appeals. He has authored briefs in more than a dozen cases before the United States Supreme Court and dozens of cases before the federal and state trial and appellate courts, including the majority of federal courts of appeals. Best Lawyers has named him as a “One to Watch” in Appellate Practice, Administrative/Regulatory Law, Health Care Law, Insurance Law, and Mass Tort/Class Actions Defense.

Representative matters

  • DHS v. Regents of the University of California: Lead author of Supreme Court merits brief on behalf of DACA recipients in successful APA challenge to the Trump administration’s 2017 rescission of the DACA program.
  • Crystallex International Corp. v. Petróleos de Venezuela, S.A.: Representing Crystallex in enforcing $1.2 billion plus interest arbitral award against Venezuela, including as lead author of Third Circuit briefs resulting in groundbreaking decision affirming attachment of Venezuela’s indirect interest in the Venezuelan state-owned petroleum company Citgo.
  • Blasket Renewable Investments v. Kingdom of Spain: Representing arbitral award holders in district court and the D.C. Circuit in seeking recognition and enforcement under the ICSID Convention and the New York Convention of arbitral awards issued against Spain. Prevailed on appeal in establishing subject-matter jurisdiction under the arbitral exception to the Foreign Sovereign Immunities Act and later obtained first U.S. judgment against Spain among dozens of arbitration enforcement actions.
  • Wit v. United Behavioral Health: Lead drafter of successful Ninth Circuit appeal and mandamus briefing on behalf of claims administrator of ERISA-governed health benefits plans. Client obtained reversal of a class action judgment that would have required it to reprocess nearly 67,000 decisions denying coverage for mental health and substantive abuse treatment. Subsequent mandamus petition resulted in an order barring plaintiffs from attempting to revive this relief by certifying a new class action.
  • Arizona Public Service Company v. Arizona Corporation Commission: Representing Arizona utility company in appeals from State public utility commission ratemaking decisions, including as lead author of successful Arizona Court of Appeals brief resulting in reversal of decision that had unlawfully denied the company its right to recover the cost of installing pollution controls on coal-fire power plant.
  • Liquid Energy Pipeline Association v. FERC: Representing trade association as lead drafter of D.C. Circuit briefs in successful appeal resulting in vacatur of FERC order setting annual index level that pipelines use to set rates for transporting oil interstate.
  • Council for Medicare Choice v. CMS: Representing coalition of entities that help beneficiaries select and enroll in Medicare Advantage and Medicare Part D plans in APA challenge to CMS rule regulating compensation for administrative services provided to insurance brokers and agents.
  • Defending pharmacy benefit manager from administrative proceedings before the FTC alleging that rebate practices violated Section 5 of the FTC Act.
  • Yukos Capital Limited v. Russian Federation: Representing arbitral award holder in seeking recognition and enforcement under the New York Convention of arbitral award issued against Russia.
  • LD v. United Behavioral Health: Representing claims administrator for ERISA-governed health benefits plans in opposing class action challenging reimbursement rates for mental health and substance abuse treatment.

Before joining the firm, Matthew served as a law clerk to the Honorable Richard A. Posner of the United States Court of Appeals for the Seventh Circuit. Matthew graduated with highest honors from the University of Chicago Law School, where he served as an Articles Editor on the University of Chicago Law Review. Matthew holds a master’s degree in Comparative Literature from the University of California, Irvine, and received his undergraduate degree in Literature from Harvard University, where he graduated magna cum laude.

Matthew is admitted to practice in Virginia and the District of Columbia. He is fluent in Spanish and proficient in French.

Sean P. Griffiths is a partner in the New York office of Gibson Dunn. Sean is a member of the firm’s Executive Committee, and previously served as Co-Chair of Gibson Dunn’s Private Equity Practice.

Sean has extensive experience representing private equity firms and their portfolio companies in mergers and acquisitions, and companies in complex carve out and spin-off transactions and acquisitions. Sean also has extensive experience in corporate finance in both public and private capital markets, troubled company representation (crisis management), and general corporate and securities compliance matters.

Sean is ranked by Chambers Global: The World’s Leading Lawyers for Business, Chambers USA: America’s Leading Lawyers for Business and Legal Media Group’s Expert Guides Guide to the World’s Leading Banking, Finance and Transactional Lawyers as a leading private equity lawyer. Chambers USA describes Sean as a “pragmatic and effective problem solver in complex and tense transaction negotiations” and notes that “it’s rare to come upon a situation he hasn’t come across before,” and that he “brings a lot of tactical insight” to deals, as well as being “responsive and very client-friendly.” In addition, Sean is recognized as a leading lawyer in the area of Leveraged Buyouts and Private Equity Law by The Best Lawyers in America®, as “Highly Regarded” by IFLR1000 and was named one of “Hollywood’s Top 20 Dealmakers of 2018” by The Hollywood Reporter. Sean is also recognized by Lawdragon as one of the 500 Leading Dealmakers in America for 2025.

Sean’s private equity investor representations include CVC Capital Partners, Investcorp, J.H. Whitney Capital Partners, and Littlejohn & Co., among others. Transactions for private equity clients include leveraged acquisitions, going private transactions, club deals, and recapitalizations.

Sean joined Gibson Dunn in 1986 after earning his Juris Doctor from the University of Virginia. He received his Bachelor of Science degree with highest distinction from Purdue University in 1983, majoring in finance.

Sean has been admitted to practice in the States of New York and California.

Alex Gesch is of counsel in the Washington, D.C. office of Gibson Dunn. He currently practices in the firm’s Litigation Department.

Before joining the firm, Alex served as a law clerk to Judge Diane S. Sykes of the United States Court of Appeals for the Seventh Circuit. He received his law degree from Yale Law School, where he was an executive editor of the Journal on Regulation. Alex graduated with highest honors from Trinity Christian College with a Bachelor of Arts degree in Political Science.

He is admitted to practice law in the District of Columbia and Wisconsin.