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James L. Messenger is a Partner in the Boston office of GRSM. James focuses his practice on complex commercial litigation in areas such as energy, business transactions, shareholder disputes, franchise disputes, breach of fiduciary duty claims, environmental matters, and intellectual property, with an emphasis on the Lanham Act, Defend Trade Secrets Act, and trademark litigation. He is an arbitrator for the American Arbitration Association (AAA). James frequently represents energy companies as lead counsel in major infrastructure projects. James is chair of the Environmental Permitting Infrastructure practice group.

James has obtained successful outcomes for complex litigation clients at every stage of the trial process, including case-ending motions to dismiss, summary judgments, trials, and appeals.