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  • M&A and Private Equity
  • Corporate
  • Energy
  • Infrastructure
  • Renewable Energy
  • Latin America

Matthew Archer Partner M&A and Private Equity, Corporate


Matt focuses on project development and finance, as well as mergers and acquisitions in the energy industry.

Matt's practice is centered on project development and mergers and acquisitions (“M&A”) in the energy industry, with a particular focus on electric power and midstream projects. He regularly advises clients on the development, construction, operation, purchase and disposition of conventional power, renewable and midstream projects. His experience includes each stage, from early development, construction, offtake agreements, through commercial operation, financing, repowering and disposition. Matt also regularly represents clients in the development, structuring and construction of large natural gas pipeline, renewable and gas-fired power projects energy projects in Mexico.

Matt’s experience encompasses all manner of revenue and construction contracts; equipment supply and warranty agreements, long-term parts and services agreements; operating and maintenance agreements; electric interconnection and transmission agreements; fuel supply and transportation agreements; and ownership, joint venture and equity participation agreements.



  • Supreme Court & Appellate
  • Complex Litigation & Dispute Resolution

Matthew L. Bush Senior Associate Supreme Court & Appellate, Complex Litigation & Dispute Resolution

New York

Matt Bush is a senior associate in the Complex Litigation group and the Supreme Court and Appellate group.  He represents clients in cases involving a wide range of subject areas, including intellectual property, employment, class actions, and products liability.

Matt specializes in high-stakes commercial litigation, devising case strategy and handling all stages of the most complex matters from initial filing, to trial, to appeal.   Matt's appellate background gives him the unique perspective to advise not just on the best strategy to win the critical motion or win the trial, but also to ensure the case is properly set up to win the appeal.  He has argued numerous motions and appeals in state and federal courts across the country, including motions to dismiss, motions for summary judgment, Daubert motions, motions in limine, directed verdict motions, and jury instructions.  He has been a part of multiple trial teams in cases that have gone to verdict and second chaired two arguments before the United States Supreme Court.

Matt represents Oracle in Oracle v. Google, the high stakes copyright case known as the "World Series of IP." Google copied thousands of lines of code from Oracle's Java Platform, and used those lines in the Android operating system found in smartphones and other devices.  The Federal Circuit found that Oracle's code was protected by copyright, and that Google's copying was not "fair use" as a matter of law.  Matt has a background in computer programming and has experience writing in languages such as Java, JavaScript, and PHP.

Matt also represented Microsoft in a $230 million employment discrimination class action case.   The Court denied a class certification motion attempting to certify a class of 8,600 female IT employees and engineers who claimed discrimination in pay and promotion. 

Prior to Joining Orrick, Matt served as a law clerk for Judge Chester J. Straub of the United States Court of Appeals for the Second Circuit and Judge Jan. E. DuBois of the United States District Court for the Eastern District of Pennsylvania.

Richard Chirls Partner Tax

New York

Richard Chirls, a New York tax partner, focuses his practice on the tax aspects of public finance transactions.  He has served as the head of Orrick’s nationally recognized Public Finance Tax Group.

With over 30 years of experience, Richard is widely recognized as one of the nation’s foremost authorities, having broad experience with tax exempt financings and related transactions involving governmental and not-for-profit entities.  His expertise and stature in the public finance community was recognized by the National Association of Bond Lawyers’ highest award for his career of distinguished service in public finance. 

Richard focuses on new products, including the development of new and creative financing techniques for governments, non-profits and investment bankers. He regularly works on transactions throughout the country.  However, in his home office in New York City, he leads the relationship with the Port Authority of New York and New Jersey, serving as counsel on well over 100 transactions over a period of more than 20 years and has headed the tax work in connection with every financing of a cultural facility relating to museums and performing arts in New York City over this same period.  Richard has worked on the tax aspects of several of the largest and most complex public private partnership (P3) transactions in recent years.  He frequently acts as special tax counsel to issuers and underwriters of municipal finance issues.



  • Technology Companies Group
  • Corporate
  • M&A and Private Equity
  • IP Counseling & Due Diligence

Jonathan J. Chou Partner Technology Companies Group, Corporate

New York

Jonathan is a partner in Orrick’s Technology Companies Group. He works with (i) tech companies throughout all stages of their life cycle, from pre-incorporation through angel, seed and growth financings to exit and (ii) angel, venture and strategic investors in the technology sector.

Jonathan has always been active in the tech and venture space.  After college, he joined TetraLogic Pharmaceuticals, a venture-backed startup biotech company based in the Philadelphia area.  As one of the first employees with TetraLogic, Jonathan was a cancer researcher focused on the discovery and development of small molecule targeted chemotherapeutics.

Nowadays, Jonathan no longer sports a lab coat or plays with pipettes.  Instead of solving biomolecular puzzles, he now helps startups and other clients solve their puzzles.  Jonathan is industry-agnostic when it comes to representing companies and investors; he has represented clients involved in a variety of sectors, including financial services, digital media, AI, robotics, biotechnology, social media, ed-tech, SaaS, fashion, cleantech, enterprise software, legal tech, e-commerce, ad-tech and more.

Even after representing hundreds of startup clients, Jonathan hasn't forgotten his days at TetraLogic, and this helps him relate to (and connect with) founders on a personal level.  Because of their shared experiences, Jonathan sees himself not only as an outside general counsel to founders and companies across the spectrum, but also as their advisor and friend who can occasionally add a dose of business practicality to solving their legal issues.



  • Structured Finance
  • Finance

William Cullen Partner Structured Finance, Finance

New York

William "Butch" Cullen is a partner with the Structured Finance Group in Orrick’s New York office. His practice focuses on securities and structured finance, with an emphasis on the securitization of financial assets, in particular, commercial mortgage assets.

Butch is also significantly involved in the workout and restructuring of defaulted real estate loans and securities, the sale and liquidation of both performing and distressed financial assets, including as part of a sale to governmental authorities, on behalf of financial institutions, and the sale of servicing platforms and investment advisory businesses.

Prior to joining Orrick, Butch was a partner in the New York offices of Kaye Scholer LLP, Thacher Proffitt & Wood LLP and Sidley Austin LLP.



  • Restructuring
  • Bankruptcy Litigation

Debra Felder Senior Associate Restructuring, Bankruptcy Litigation

Washington, D.C.

Debbie Felder, a senior associate in the Washington, D.C. office, is a member of the Restructuring group. Debbie has 18 years of extensive experience in the areas of bankruptcy, insolvency and creditors’ rights.

Debbie represents secured and unsecured creditors, investors, lenders, asset purchasers, financial institutions, preference defendants, debtors and other parties in a wide variety of bankruptcy and restructuring matters, as well as in related litigation throughout the United States. In 2019, IFLR 1000 named Debbie a Rising Star in the restructuring space.

Recently, Debbie was the lead restructuring associate representing Toyota in the $30 billion bankruptcy of Takata Corporation. Takata and several of its subsidiaries filed for Chapter 11 bankruptcy in the United States and sought bankruptcy protection in Japan and several other jurisdictions in the aftermath of a worldwide problem involving faulty airbag inflators that led to numerous deaths and the recall of millions of vehicles. Toyota was one of the largest creditors in the proceedings, with claims of over $7 billion. Orrick’s work in the Takata bankruptcy and restructuring matter – which included the sale of all of Takata’s assets except for the inflator business to the Chinese-owned, Michigan-based Key Safety Systems – was awarded the “2019 Cross Border Turnaround of the Year / Large” by Global M&A Network.

Debbie was also the lead restructuring associate in the representation of the Conflicts Committee of Seadrill Partners (SDLP) in the $14 billion Chapter 11 bankruptcy and associated restructuring proceedings of Seadrill Limited, SDLP’s parent company. This bankruptcy and related restructuring was awarded “2019 Cross Border Turnaround of the Year / Mega” by Global M&A Network.

Other recent notable engagements include representing counsel to a borrower in the restructuring of a toll road, representing financial institutions and others in the global Lehman insolvency proceedings, representing a lender in the restructuring of a performing arts center, representing a purchaser in a section 363 bankruptcy sale and representing a defendant in a preference and fraudulent transfer litigation.

Debbie is active in pro bono matters including advising distressed clients in corporate dissolution proceedings pursuant to state statutes. She recently drafted a white paper on “Pay for Success” (PFS) programs – a social services funding mechanism in which non-governmental investors fund social programs and receive returns on their investments from the government only if the programs are successful – which explores the feasibility of using PFS programs to provide civil legal aid to vulnerable populations. She also represents proposed guardians and adoptive parents in connection with guardianship and adoption proceedings involving abused or neglected children in the Superior Court for the District of Columbia.

Debbie regularly presents CLE training programs to clients on bankruptcy-related topics, including best practices for creditors.

Prior to joining Orrick, Debbie was an associate at Swidler Berlin LLP. As an undergraduate, she spent four summers as an intern in the Clerk’s Office of the United States Supreme Court. During her time at the United States Supreme Court, Debbie researched and wrote a paper on the U.S. Attorneys General, which she presented to the U.S. Solicitor General.



  • Energy
  • Infrastructure

Keith Kriebel Senior Counsel Energy, Infrastructure

Washington, D.C.

Keith W. Kriebel is resident in the Washington, D.C., and Seattle offices and a member of the firm’s Energy and Infrastructure Group.

He focuses on project finance and energy and infrastructure transactions, particularly the development and financing of large infrastructure projects undertaken using public-private partnerships, as well as the development, financing, restructuring, acquisition, and sale of domestic and international energy projects, including thermal and renewable power projects, gas pipelines, ethanol facilities and utility assets. 

He is experienced in all aspects of project documentation, including design-build and engineering, procurement and construction contracts; operations and maintenance contracts; public-private partnership agreements; asset and share purchase agreements; partnership, shareholder, and other equity agreements; development agreements; turbine and other equipment supply agreements; taxable and tax-exempt financing documents; leases; power purchase agreements; fuel supply agreements; Rule 144A offerings; and privatization and bidding documents. Keith represents sponsors, lenders, contractors, utility offtakers and investors.

From 1983 through 1987, Keith served as a captain in the Office of Chief Counsel of the United States Army Corps of Engineers, where he focused on water and other civil works projects.



  • Banking & Finance
  • Governmental Affairs
  • Antitrust & Competition
  • International Arbitration & Dispute Resolution
  • Africa
  • Funds

Thomas Wyatt Laryea Counsel Banking & Finance, Governmental Affairs

Washington, D.C.

Thomas Laryea is a recognized international law and policy expert in sovereign debt restructuring and Africa-related finance and investment. While he has a special interest in Africa, his experience is truly global.

Thomas formerly served as Assistant General Counsel at the International Monetary Fund, where he was responsible for the IMF’s legal relations in finance and economic surveillance with each of its member countries.

His practice bridges legal and strategic advice on the transactional, public policy and dispute resolution aspects of international finance and investment.



  • White Collar, Investigations, Securities Litigation & Compliance
  • Internal Investigations
  • Asset Recovery for Corporate Crime Victims
  • Cyber, Privacy & Data Innovation

Mark Mermelstein Partner White Collar, Investigations, Securities Litigation & Compliance, Internal Investigations

Los Angeles

Mark Mermelstein, a trial lawyer with more than 20 first-chair trials, specializes in white collar criminal defense and complex litigation.

Mark Mermelstein, a trial lawyer with more than 20 first-chair trials, specializes in white collar criminal defense and complex litigation, particularly in technology-related matters. He also handles Cybersecurity, Privacy, Litigation and Enforcement matters.

Mark focuses his work representing corporations and individuals facing allegations of securities fraud, healthcare fraud, environmental crimes, violations of the Foreign Corrupt Practices Act (FCPA) and the False Claims Act, mail/wire fraud, and embezzlement.

Mark also focuses on asset recovery for corporate crime victims such as those victimized by cybercrime, including theft of trade secrets, hacking, counterfeiting and other business crimes. In this regard, Mark routinely leads data breach and cybersecurity incident response efforts, as well as proactively advises on data breach mitigation strategies.

Mark has written many articles and has spoken extensively on many aspects of his practice. A frequent commentator on matters related to white collar crime, he has been recommended by Legal 500 in both White Collar Criminal Defense, and Cybersecurity.


  • Structured Finance
  • Asset Backed Securities
  • Derivatives
  • Mortgage Related Securities

S. Chris Min Of Counsel Structured Finance, Asset Backed Securities

New York

Sie Ne Chris Min, an of counsel in the New York office, is a member of the Structured Finance Group.  Chris represents issuers, sponsors, underwriters and placement agents in connection with public offerings and private placements of various asset-backed securities.

She has broad experience with a number of asset classes, including credit card receivables, auto loan receivables, municipal bonds and residential mortgages.   



  • Technology Companies Group
  • Technology Transactions

Brenda Rivera Associate Technology Companies Group, Technology Transactions

New York

Brenda Rivera is an associate in the Technology Transactions practice at Orrick and a member of Orrick's Technology Companies Group.



  • Technology Companies Group
  • Tax

Jake Routhier Associate Technology Companies Group, Tax

San Francisco

Jake Routhier, a corporate associate in Orrick's San Francisco office, is a member of the Technology Companies Group.

Jake represents high growth technology companies in several areas, including corporate and securities law, formation, and venture capital financings.

Prior to joining Orrick, Jake worked in education technology, holding operational roles at Uncommon Schools, the National Museum of Mathematics, and Lightsail Education.

Jake received his JD/MBA from the University of Pennsylvania Law School and the Wharton School of Business in 2018, where he received the Academic Excellence Fellowship. He is also a 2010 graduate of Dartmouth College where he double majored in Mathematics and Women & Gender Studies.