William B. ("Bill") Nash is a partner in Haynes and Boone's Intellectual Property Litigation Practice in the firm's Dallas and San Antonio offices. Bill is a registered patent attorney and litigator with more than 22 years of extensive national and international experience in intellectual property.

As a litigator, Bill protects his clients' rights and is often called upon in critical company litigation. He has handled major patent infringement, trademark infringement, copyright infringement, unfair competition, and trade secret cases in jurisdictions from California to Massachusetts, including the U.S. International Trade Commission (ITC) in Washington, D.C., in addition to those filed in the four federal districts within Texas. As an intellectual property advisor and expert, he has broad experience in infringement and validity opinions, and he regularly helps clients develop strategies to avoid or minimize litigation risks. Bill works closely with his clients to protect, develop, commercialize, and license a company's IP assets, both in the U.S. and internationally. He has been responsible for over 4,000 trademark filings around the world and has been lead attorney on over 100 proceedings before the Trademark Trial and Appeal Board.

Bill is AV® Peer Review Rated Preeminent by Martindale-Hubbell® Law Directory.