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  • Energy
  • Infrastructure

Lauren Webb Associate Energy, Infrastructure

New York

Lauren is a member of the Energy and Infrastructure Group. 

Her practice focuses on acquisitions as well as project development and financing in the renewable energy sector.



  • Complex Litigation & Dispute Resolution
  • Troubled Transactions
  • Trade Secrets Litigation

Michael Weed Senior Counsel Complex Litigation & Dispute Resolution, Troubled Transactions


Michael Weed, Senior Counsel in the Complex Litigation & Dispute Resolution Group, is based in the Sacramento office. Mike focuses his practice on general commercial litigation.

Mike is experienced and effective in bet-the-company litigation, but his first focus is always to keep his clients out of litigation or to resolve it favorably and quickly when litigation is unavoidable. He has significant experience in a variety of substantive areas, including commercial contract and business disputes, trade secret misappropriation, false advertising and unfair business practices, environmental compliance and litigation, Proposition 65, and administrative enforcement proceedings. Mike has been a lead trial attorney in both civil and criminal matters.  

Mike also has unique and in-depth expertise defending constitutional and statutory challenges to public finance projects on behalf of state and local agencies throughout California. Over the past 15 years, he has successfully prosecuted and defended dozens of validation actions, in both trial and appellate courts, confirming the legality of public finance transactions involving a variety of projects, including sports stadiums, convention centers and critical infrastructure.

Mike was a summer associate with Orrick in 1997, and an associate from 1998 through July 2000. He then joined the Sacramento County District Attorney’s Office where he prosecuted numerous misdemeanor trials. He returned to Orrick in February 2001 to continue his civil practice.



  • M&A and Private Equity
  • Corporate
  • Employment Law & Litigation
  • IP Counseling & Due Diligence
  • China
  • Japan

L. Mark Weeks Partner M&A and Private Equity, Corporate

Hong Kong; Tokyo

Mark Weeks is a partner of the M&A and Private Equity Group, splitting his time between Hong Kong and Tokyo. He practiced in New York and Tokyo for more than 25 years. Before relocating to Hong Kong, Mark served as office leader of Orrick’s Tokyo office from 2006 to 2017.

He concentrates his practice on mergers and acquisitions, joint ventures, clean technology, life sciences, IT and telecommunications asset transfers, strategic investments, and general corporate representation for U.S., Japanese and other Asian companies.

Mark speaks, reads and writes fluent Japanese.

David Weidner Project Attorney

Wheeling, W.V. (GOC)

David is a member of the Orrick Analytics group. The group specializes in using technology and project management discipline to assist firm attorneys with litigation and transactional tasks, particularly tasks that involve large volumes of data and documents.

David works with litigation attorneys and third party vendors to manage the review and production of documents relevant to investigations and litigation. This work includes using early case assessment technology to analyze, categorize, and cull data. He also manages teams of specialists performing document review, redaction, analysis, production and drafting privilege logs. David assists litigation teams to prepare for trial, including drafting deposition summaries, factual memoranda, and exhibit charts. He also works with practice office attorneys on transactional tasks, including contract review and due diligence.

Prior to joining Orrick, David interned in an intellectual property firm in Pittsburgh, Pennsylvania, and worked in the banking sector in the United Kingdom.



  • Trade Secrets Litigation
  • Employment Law & Litigation
  • Wage and Hour
  • Whistleblower & Corporate Investigations
  • Discrimination, Harassment & Retaliation
  • Automotive Technology & Mobility

Michael D. Weil Partner Trade Secrets Litigation, Employment Law & Litigation

San Francisco

Michael Weil, an Employment partner in the San Francisco office, represents clients in high-stakes employment, trade secrets and employee mobility litigation throughout the United States. Michael was recognized as a Rising Star in his field by Law360.

Michael's practice focuses on matters involving trade secrets, restrictive covenants, employee mobility issues, wrongful termination and discrimination. He has also defended numerous wage-and-hour class actions and representative actions under state and federal laws, including claims for overtime, vacation, meal and rest break penalties, waiting-time penalties and other alleged Labor Code violations. Finally, Michael counsels clients on a wide variety of employment and related corporate issues. 



  • M&A and Private Equity
  • Corporate
  • International Arbitration & Dispute Resolution
  • Banking & Finance
  • Equity Capital Markets
  • Complex Litigation & Dispute Resolution

Dr. Stefan Weinheimer Partner M&A and Private Equity, Corporate


Dr. Stefan Weinheimer, a partner in Orrick's Düsseldorf office, is a member of the European Corporate Group. Stefan's practice focuses on advice in respect of M&A, Corporate and Private Equity.

Stefan has been part of Orrick since 2004. Before that he was a partner with a German and with a major London law firm.



  • Technology Companies Group
  • Privacy
  • GDPR Readiness
  • Intellectual Property
  • Cyber, Privacy & Data Innovation

Robert Weinhold Associate Technology Companies Group, Privacy


Robert, associate at Orrick's Düsseldorf office, is member of Data Privacy and Technology Company Group in Germany. He focuses on counseling in the area of Data Privacy, IP/IT and mergers and acquisitions in this field.

Robert has always been fascinated by new technologies and the digitization. Following his fascination, he focused his legal studies on media law, intellectual property law and data protection law. Prior to working at Orrick he also gained experience by founding a company provided a software as a platform solution and working for a German venture capital investor. His legal advice in mergers and acquisitions or legal assessments regarding data privacy will thus reflect not only his legal expertise but also his experience and fascination for new technology. For our clients, he prepares, among other things, privacy policies or data processing agreements or is involved in conducting a due diligence or drafting a shareholders' agreement. Robert is also advising in GDPR readiness and general data privacy compliance and works on various aspects of trademark and competition law.

He joined Orrick in 2017, after working as a scientific researcher in the field of Data Privacy.



  • Energy
  • Infrastructure
  • Renewable Energy
  • M&A and Private Equity
  • Tax

Mark Weitzel Partner Energy, Infrastructure

San Francisco

Mark has more than 25 years of experience in the financing, development, acquisition and sale of energy and infrastructure projects and companies.

Mark has a finance, tax and corporate background, and focuses on structuring complex equity and debt investments, and negotiating investment, shareholder and joint venture agreements. He has a particular focus on tax and cash equity financing of renewable energy projects, including in the solar and wind space.

Mark is a recognized leader in the field. He is the former co-chair of Orrick’s Energy & Infrastructure practice, and has been named by Chambers as one of “America’s leading energy lawyers”, described by clients as “a standout.” He is also highlighted in The Legal 500 USA as a leading individual in the areas of energy: renewable/alternative and is highlighted in the conventional power category. Euromoney has recognized Mark as one of the “world’s leading project finance lawyers” and one of the “world’s leading energy and natural resource lawyers.” He has also been recognized by Best Lawyers in America for project finance law, by The Legal 500 as a leading project finance lawyer, and has been a Law360 Energy MVP. Mark is a frequent speaker on energy project and infrastructure investments.



  • Energy & Infrastructure
  • Renewable Energy

Adam Wenner Partner Energy & Infrastructure, Renewable Energy

Washington, D.C.

Adam heads Orrick's Energy Regulatory Group. He has been active in the energy industry for more than 35 years.

As Deputy Assistant General Counsel at the Federal Energy Regulatory Commission, Adam was instrumental in the development of the federal programs and policies that fostered the independent power industry, and his experience includes representing independent power generators -- including some of the largest wind and solar projects in the United States -- as well as merchant transmission companies, traditional electric utility companies, before FERC, state utility commissions and NERC Regional Reliability Organizations.  

Adam also advises power project developers and financial institutions in transactions involving the development, financing, sale and purchase of energy projects, and he advises some of the largest U.S. companies in the development and implementation of FERC and NERC compliance programs.

Adam has authored many articles about the power industry in publications including Global Utilities Finance Report, International Power Finance Review, International Financial Law Review, Public Utilities Fortnightly, Electricity Journal and Energy Economist.



  • Employment Law & Litigation

Michael Wertheim Managing Associate Employment Law & Litigation

Los Angeles

Michael Wertheim is a Managing Associate in Orrick's Los Angeles office, representing employers in workplace law matters including employment litigation, class actions and preventative advice and counsel.

He represents companies in all types of employment disputes including harassment, discrimination, retaliation and wrongful termination cases in both state and federal court. His practice also involves defending employers in wage-and-hour class and representative actions under the California Labor Code and Private Attorneys General Act.

Additionally, Michael has experience handling unfair labor practice charges, labor arbitrations and other labor proceedings before the National Labor Relations Board and Public Employment Relations Board.

Taylor S. West Associate

Washington, D.C.

Taylor West is an associate in the Washington, D.C., office and a member of the firm's Litigation practice group.