John Karl Buche

Austin Patent & Trademark Attorney

Attorney John Karl Buche
San Diego Attorney John Karl Buche

John Karl Buche

John Buche
specializes in civil litigation and intellectual property law. For more than two decades, Mr. Buche has assisted clients with patent, trademark, copyright and trade secret related matters.

As a registered patent attorney, Mr. Buche has successfully filed and secured patents for clients in a wide range of industries which include oil and gas, firearms, sports apparatus, medical devices, and software. Samples of patents and trademarks secured by Mr. Buche on behalf of his clients may be found here.

As an established litigator and trial attorney, Mr. Buche has litigated dozens of intellectual property matters across the country in state and federal courts. Such matters have included jury trials, bench trials, arbitrations, contempt hearings, Markman hearings, injunctions, restraining orders, a wide variety of motion hearings, opposition & cancellation proceedings at the Trademark Trial and Appeal Board (“TTAB”), and patent challenges at the Patent Trial & Appeal Board (“PTAB”).

Taking a fairly unusual career path, outside of his intellectual property practice, for over twenty years, John has been a steadfast advocate for victims of serious personal injuries. He enjoys this work because it is morally redeeming and enriches all aspects of his civil litigation and trial practice.

A partial list of matters handled by Mr. Buche may be found here.


  • State of Texas
  • State of California
  • State of Arizona
  • State of Wyoming
  • United States Supreme Court
  • U.S. Patent & Trademark Office
  • Court of Appeals for Federal Circuit
  • 5th & 9th Circuit Courts of Appeals
  • Texas Northern, Southern, Eastern and Western Federal District Courts
  • California Southern, Central, Eastern and Northern District Courts

If you would like to contact John about a case, he may be reached at

Patent Attorney in San Diego