Charles L. Ainsworth

Charles L. Ainsworth is a principal attorney and shareholder at Parker, Bunt & Ainsworth, P.C., a boutique litigation firm based in Tyler, Texas, where his practice emphasizes patent litigation, business litigation, and personal injury matters. The firm, formed in 2002 by former Federal Judge Robert M. Parker, frequently serves as local counsel to national law firms in the Eastern District of Texas. Ainsworth joined the firm in August 2006, following earlier roles at Clark, Lea, Ainsworth & Porter; Spivey & Ainsworth; and the Law Offices of Larry P. Boyd.

Ainsworth's patent litigation experience covers a diverse range of technologies, including semiconductors, medical devices, software, oil and gas equipment, transmitters, clothing, and golf clubs. He has represented both plaintiffs and defendants in civil litigation matters involving intellectual property. An example of his patent litigation involvement includes appearing as counsel for Plaintiff Paid Search Engine Tools, LLC in Paid Search Engine Tools, LLC v. Google, Inc. and Microsoft Corporation, Civil Action No. 2:08cv061 (DF-CE).

Recognized for his work in Intellectual Property, Ainsworth has been selected to Super Lawyers from 2021 to 2025. His firm holds a Tier 1 ranking in Litigation - Patent in Tyler by Best Law Firms. Information regarding his specific involvement in Patent Trial and Appeal Board (PTAB) or Inter Partes Review (IPR) proceedings was not readily available from public sources.

Ainsworth was admitted to the Texas Bar in 1992. He earned his Juris Doctor (J.D.) from South Texas College of Law in May 1992 and a Bachelor of Arts (B.A.) in Political Science from Texas Tech University in May 1985. He is admitted to practice in the U.S. District Courts for the Northern, Eastern, Southern, and Western Districts of Texas, as well as the U.S. Court of Appeals for the Fifth Circuit.