William F. Cavanaugh

William Cavanaugh is a senior litigation partner and served as co-chair of the firm from 2007 to 2017. His areas of concentration include antitrust, intellectual property and commercial litigation. A skilled trial attorney with extensive experience in both state and federal courts as well as in arbitration, William Cavanaugh has served as national and trial counsel in several large multiparty antitrust, fraud and consumer protection litigations in federal and state courts across the United States brought by private plaintiffs and State Attorneys General. His clients include major pharmaceutical, medical device and financial services companies. William Cavanaugh also served as Deputy Assistant Attorney General of the United States for Civil Enforcement in the Antitrust Division of the Department of Justice. William Cavanaugh’s trial experience includes securing defense verdicts in a multi-billion dollar antitrust class action, civil fraud class actions and representing a plaintiff medical device manufacturer in back-to-back jury verdicts of $325 million and $271 million in patent infringement cases against two competitors. He has also successfully tried a number of Hatch-Waxman patent cases and represented a number of major health care companies in arbitrated contract disputes.