William (Bill) Parrish

Parrish Dispute Resolution

Chicago, Illinois 60601


Business, Commercial, Computer and Software, Contract, Copyright, Intellectual Property, Licensing, Partnership Disputes, Patent, Trade Secrets, Trademark

Bill Parrish has more than 40 years of experience representing both plaintiffs and defendants in Intellectual Property and other Complex Commercial litigation.  He has worked in a large national firm and in a litigation boutique, representing Fortune 100 companies, as well as individuals, including in “bet-the company” litigation.   

As a result of being in the trenches, representing both sides, he has an understanding of and a feeling for, not only the strategies often employed by the parties and their counsel on both sides, but for the pressures they face and the considerations that go into different types of settlements for different types of clients.

Although his practice has involved a wide spectrum of commercial cases, the emphasis has been on:

•Intellectual property disputes
•Trade secret
•Trademark, trade name and trade dress
•Copyright and patent disputes
•Business torts and Complex contractual disputes, such as:

-Unfair competition
-Deceptive trade practices
-Tortious interference with actual and prospective contracts and/or business relationships
-Covenants not to compete
-Breach of fiduciary duty
-Unfair advertising practices
-Breach of contract claims
-Software contracts
-Disputes between game developers and distributors

•Securities and other investment fraud cases
•Responding to civil investigative demands
•Government investigations of:
-Loan disclosure issues
-Direct mail advertising programs
-Reference retail pricing
-Sweepstakes, giveaways, comparative advertising, home business opportunities


University of Texas at Austin (B.A., Plan II with honors) 1975

  • •Phi Beta Kappa
  • •Named The University of Texas Outstanding Student, 1974
  • •Edward S. Guleke Student Excellence Award, 1976 (1 of 2 awarded)

University of Texas School of Law (J.D., 1978)

University of Texas School of Law Center for Public Policy Dispute Resolution (Mediator Training, 2004)

Licenses & Admissions

U.S. District Courts for the Eastern, Western, Northern and Southern  Districts of Texas,

U.S. Court of Appeals for the Federal Circuit

U.S. Court of Appeals for the Fifth Circuit

Licensed to practice in the state courts of Texas

Professional Affiliations

Robert W. Calvert Inn of Court, Executive Committee Member, 2000-2006, President, 2004/2005 term Master, 1999-present

American Bar Association (Alternative Dispute Resolution, Litigation and Intellectual Property Sections)

State Bar of Texas (Alternative Dispute Resolution, Litigation, Intellectual Property Sections)

Past speaker on IP litigation topics at seminars sponsored by the State Bar of Texas, including the Advanced Intellectual Property Law Course, the Advanced Civil Trial Course and the High Technology Litigation Course.


For multiple years, he has been listed in The Best Lawyers In America® (Woodward/White, Inc.) for Bet-the-Company Litigation, for Commercial Litigation, for Patent Litigation and for Intellectual Property Litigation. He was recently named in the Best Lawyers® 2020 edition as Patent Litigation “Lawyer of the Year” in Austin.

For over 30 years he has been rated in Martindale-Hubble® Peer Review Ratings as “AV® Preeminent ™”, the highest possible peer review rating in legal ability and ethical standards. He has also been given an “AV® Preeminent™” rating multiple years in the Martindale Hubble Judicial Edition, which reflects the highest possible rating in both legal ability and ethical standards based upon confidential 

opinions of members of the Judiciary as well as members of the Bar. For many years he has also been named in Texas Monthly, Super Lawyers®, (published by Thompson Reuters.)

American Bar Foundation Life Fellow

Texas Bar Foundation Life Fellow

Austin Bar Foundation Fellow

Austin Office
4412 Spicewood Springs Road
Spicewood Business Center, Suite 202
Austin, Texas 78759

P: 512-520-9407
E: [email protected]