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  • J.D., Washington and Lee University School of Law, magna cum laude, 2006
  • B.A., Middlebury College, cum laude, 2001

    Lead Articles Editor, Washington & Lee Law Review

Bar Admissions

  • Delaware

Court Admissions

  • U.S. District Court, District of Delaware

Memberships & Affiliations

American Bar Association

Delaware State Bar Association

Federal Bar Association

The Carpenter-Walsh Pro Bono Inn of Court

ABA Climate Change, Sustainable Development and Ecosystems Committee

Jameson A.L. Tweedie

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  • T: 302.984.6357
    F: 302.220.4621

Mr. Tweedie is an associate of the Business Litigation practice group and a member of the Climate Change and Renewable Energy industry group, representing corporate and individual clients in commercial, tort, trust and environmental matters across a broad spectrum of industries including software, technology, chemical manufacturing and transportation. In addition to litigating in the Delaware state and federal courts, and in other jurisdictions pro hac vice, Mr. Tweedie has arbitrated disputes under both the American Arbitration Association (AAA) and International Institute for Conflict Prevention and Resolution (CPR) rules. Mr. Tweedie’s experience includes:

  • A multimillion-dollar technology dispute in the U.S. District Court for the District of Delaware involving breach of contract, intellectual property and tort claims related to the development of an innovative travel software product
  • Defense of a purported multistate class action seeking recovery of benefits allegedly paid out under corporate-owned life insurance (“COLI”) policies in the U.S. District Court for the Northern District of Oklahoma
  • Obtaining complete summary judgment in the Delaware Court of Chancery in a dispute over the distribution of an multimillion-dollar trust
  • Arbitration of a commercial contract dispute, successfully defeating tens of millions in claims against our client and securing a multimillion-dollar award on counterclaims
  • Obtaining complete summary judgment in a AAA arbitration in an indemnification dispute between two chemical companies

Recognizing the importance of electronic discovery in complex commercial litigation, Mr. Tweedie is a member of the E-discovery Group and well-versed in data preservation, retention, collection and production. Mr. Tweedie was part of a team that obtained an award of significant monetary sanctions by demonstrating an opponent's e-discovery failures. Mr. Tweedie also serves on the Litigation Support Advisory Board, which evaluates and seeks to continually improve McCarter’s e-discovery resources.

Mr. Tweedie’s practice also includes a focus on climate change and sea level rise.  He is an Electronic Communications Vice Chair for the American Bar Association’s Climate Change, Sustainable Development and Ecosystems Committee, a contributor to the firm’s Climate Lawyers Blog, and regularly tweets on the law, policy and science of climate change and sea level rise at @JamesonTweedie.

Mr. Tweedie is committed to pro bono and is a member of the Carpenter-Walsh Pro Bono Inn of Court in Delaware. One of Mr. Tweedie’s more notable pro bono representations was in a McCarter team that handled the appeal of a custody dispute to the Delaware Supreme Court. The appeal was one of first impression, resulting in a unanimous en banc reversal in favor of our client. Subsequently, the Delaware legislature amended the law at issue, adversely affecting the client. We again appeared before the Family Court and appealed to the Delaware Supreme Court. For our pro bono service, the Delaware State Bar Association awarded McCarter & English the 2010 Leadership Award.

During law school, Mr. Tweedie was a Lead Articles Editor of the Washington & Lee Law Review. His Note, Transboundary Environmental Impact Assessment Under the North American Free Trade Agreement, is available at 63 Wash. & Lee L. Rev. 849 (2006). Prior to law school, Mr. Tweedie worked as an Assistant Instructor in Science, focused mainly on geographic information systems (GIS), in the Geography Department at Middlebury College.


Environmental Caselaw Update
Delaware State Bar Association, Wilmington, DE