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Calvin P. Griffith (Cal)


(T) +1.216.586.7050
(F) +1.216.579.0212


  • The Ohio State University (J.D. 1987, Order of the Coif; B.S. in Molecular Genetics 1983)

Bar Admissions

  • Ohio and registered to practice before the United States Patent and Trademark Office

Cal Griffith is a nationally recognized trial lawyer whom clients turn to for their most important intellectual property cases. He has tried multiple patent cases and other commercial disputes to juries and to the bench. As lead trial lawyer in patent cases, Cal has won jury verdicts that total more than $3 billion and obtained numerous defense verdicts.

Cal's practice involves a wide range of technologies for companies such as AbbVie, Canon, Eaton, General Electric, Goodyear, Johnson & Johnson, Merck, and Procter & Gamble.

Cal's intellectual property litigation experience includes numerous cases involving patents, trade secrets, and copyrights. He has litigated cases in district courts throughout the United States as well as the U.S. International Trade Commission. He has won jury trials and summary judgments for plaintiffs and defendants. His patent cases have involved diverse technologies, including software and systems, computer hardware, semiconductors, medical devices, consumer products, and biotechnologies.

Cal also represents clients in inter partes review proceedings at the USPTO. In addition to intellectual property matters, he has litigated in the areas of antitrust, unfair competition, and complex commercial litigation.

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