Quinn Emanuel Urquhart & Sullivan, LLP

Mr. Posner is a partner in the Los Angeles office of Quinn Emanuel. He is the Co-Chair of the firm’s Trademark and Copyright Practice Group and a leader of the firm’s California appellate practice. His diverse practice focuses on complex litigation at the trial court and appellate levels on behalf of plaintiffs and defendants, particularly involving intellectual-property disputes, commercial disputes, employment discrimination, and products liability.

Among his extensive experience in intellectual-property matters, Mr. Posner has successfully represented clients in trials and appeals touching on a variety of matters within the entertainment, technology, consumer products, and fashion industries. He has helped his clients protect some of the most famous and valuable brands in existence by pursuing and defending against claims of unauthorized use in federal courts and in the U.S. Patent and Trademark Office. Mr. Posner also has had substantial success representing foreign clients in IP litigation in U.S. courts, with a particular focus on representing clients from Asian countries both to protect their IP rights and defend them against claims of infringement.

Mr. Posner has prevailed in several trials, including jury trials and arbitration proceedings, and has helped his clients (plaintiffs and defendants) recover their attorney’s fees after prevailing at trial on multiple occasions. Mr. Posner also has been asked on several occasions to take over existing matters for purposes of discovery or trial after a client has obtained unfavorable pre-trial rulings, or for purposes of appeal after a client has obtained an unfavorable judgment after trial.

Mr. Posner has been recognized by the World Trademark Review 1000 as a Recommended Individual who is "renowned for his courtroom prowess and tenacity” and “flourishes on both sides of the ‘v’, securing victories in diverse industries.”

Before joining the firm, Mr. Posner clerked for the former Chief Judge of the Central District of California, the Honorable George H. King (ret.).