Califf T. Cooper


Title: Senior Counsel
Qualifications: Attorney at Law

Location: Houston
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Califf Cooper is an IP litigation associate at Osha Liang. He has represented clients in a variety of matters and industries involving complex technologies such as medical devices, construction manufacturing processes, optic systems, semiconductor manufacturing processes, data transmission technologies, photovoltaic modules, and other computer and software related technologies.  Mr. Cooper also has experience litigating architectural copyright cases and advising architects, designers, builders, and developers in architectural copyright matters.

Mr. Cooper has litigated patent cases and advised clients on intellectual property matters for over 13 years. He has substantial experience in all aspects of managing and preparing cases for trial, including invalidity and non-infringement opinions, pre-filing investigations and counseling, formulating case strategy, engaging in and directing all phases of discovery, retaining and working with expert witnesses, preparation and presentation of fact and expert witnesses, claim construction briefing, preparation of dispositive motions and appellate briefing. Mr. Cooper’s experience in the courtroom includes jury trials as well as arguing claim construction hearings and other substantive motions.

Mr. Cooper earned a B.S. degree in Biomedical Engineering from Texas A&M University in 2003. In 2006, he graduated cum laude from South Texas College of Law where he was a member of South Texas Law Review and the Order of Lytae. Before practicing law, Mr. Cooper worked in the Optical Biosensing Lab at Texas A&M University and published his research in the International Society for Optical Engineers journal, titled “Modeling the rabbit’s eye with the Mueller matrix for birefringent properties.”


  • J.D., South Texas College of Law (2006)
  • B.S., Biomedical Engineering, Texas A&M University (2003)


  • State Bar of Texas
  • United States District Court – Eastern District of Texas
  • United States District Court – Southern District of Texas
  • United States District Court – Western District of Texas
  • United States District Court – Northern District of Texas
  • United States Court of Appeals for the Federal Circuit


  • “Texas Rising Star,” Texas Super Lawyers (2015-2016)


  • Houston Bar Association
  • Houston Intellectual Property Law Association