William C. Rooklidge - Gibson, Dunn & Crutcher LLP
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William C. Rooklidge

Listed in Best Lawyers since 2006

William C. Rooklidge, a partner in the Orange County office of Gibson, Dunn & Crutcher LLP, joined the firm in 2015.  A member of the firm’s Litigation Department and Intellectual Property Practice Group, he has extensive experience in patent and trademark infringement litigation in the federal district courts and before the United States Court of Appeals for the Federal Circuit, as well as arbitration of patent disputes.

Mr. Rooklidge is an experienced trial lawyer who has successfully handled many significant intellectual property cases since trying his first case as lead trial counsel, a patent infringement case involving power tools, in 1994, when he obtained for his patentee client a judgment of treble damages and attorney fees.  Highlights include earning a 2011 defense verdict for his client in a patent infringement case involving internet search advertising in the Eastern District of Texas and securing a 2014 award for his client in a breach of contract arbitration involving a telephony patent license agreement in Zurich, Switzerland.  Appellate highlights include overturning a denial of preliminary injunction on patent infringement and defending a client’s trademark registration from charges of abandonment.

Mr. Rooklidge earned a Bachelor of Science degree in mechanical engineering from the University of Portland in 1979 and subsequently worked as an engineer with Tube Forgings of America.  He earned his law degree from Northwestern School of Law of Lewis & Clark College in 1984, where he served as Associate Editor of Environmental Law, and then a master of laws degree in patent and trade regulation from The National Law Center of George Washington University in 1985.  After completing his legal education, he served as a law clerk to the Honorable Helen W. Nies, Circuit Judge of the United States Court of Appeals for the Federal Circuit from 1985 to 1987.

Mr. Rooklidge has served as President of the Orange County Patent Law Association and American Intellectual Property Law Association.  He is a founding master of the Howard T. Markey Inn of Court.  He was named Best Lawyers’ Orange County Litigation Patent 2015 Lawyer of the year, and recently was listed in The Legal 500.  He has authored or co-authored over 50 legal publications, including Compensatory Damages Issues In Patent Infringement Cases: A Pocket Guide For Federal District Court Judges (Federal Judicial Center, 2011).

Mr. Rooklidge is admitted to practice in the federal district courts of California, the Central District of Illinois, the Eastern District of Texas, and the Western District of Wisconsin, as well as the United State Courts of Appeals for the Ninth and Federal Circuits and the United States Supreme Court.  He also is admitted to practice before the United States Patent and Trademark Office. 

Before joining Gibson Dunn, Mr. Rooklidge was a partner at Jones Day, Howrey, Howard Rice and Knobbe Martens Olson & Bear.

University of PortlandBS George Washington UniversityLL.M Lewis & Clark CollegeJ.D.

Office Location

3161 Michelson Drive
Irvine, CA 92612-4412
United States


Lawyer of the Year Awards

2016 Lawyer of the Year in Litigation - Intellectual Property of the Orange County Metro Area2015 Lawyer of the Year in Litigation - Patent of the Orange County Metro Area2011 Lawyer of the Year in Intellectual Property Law of the Orange County Metro Area
William C. Rooklidge has earned a Lawyer of the Year award for 2016!William C. Rooklidge has earned a Lawyer of the Year award for 2015!William C. Rooklidge has earned a Lawyer of the Year award for 2011!

Practice Areas

Litigation - Intellectual Property
Litigation - Patent