Dedicated to Protecting Ideas Award-winning intellectual property law, IP strategy services, and advisement. We are passionate about helping you protect your best thinking. Patent of the Month: Vehicle with Frunkgate Frunkgate: US 10,676,137 has issued for something you didn’t know you wanted, a “tailgate” on the front of your car. Learn More Newest Team Member Stephen Liu is a patent attorney licensed to practice before the United States Patent and Trademark Office and the State Bar of Texas, and the newest member to our team.

We are trusted legal advisors to some of the world’s leading companies.

Carstens & Cahoon is an award-winning intellectual property law firm. We help mid market clients and venture-backed startups with patent, trademark, and copyright law matters.


Patent litigation, prosecution, international filings, counseling


Trademark acquisition, litigation, and international filings

IP Strategy

Landscape studies, white space analysis, freedom to operate counsel

2021 Patent Litigation Trials in the Western District of Texas

By Vincent J. Allen. It is no secret that the Waco Division of the Western District of Texas is the rising star of patent litigation.  Judge Alan Albright successfully marketed the district to patent infringement plaintiffs to become the country’s busiest patent judge.  One attraction of the Western District is …

Read More
Dallas County Line Matters

The Dallas County Line Matters in Texas Patent Litigation

One of the finer points of practicing patent litigation in Texas, which is home to four federal judicial districts, is knowing whether a defendant in the DFW area is located north or south of the Dallas County line. The boundaries between the Eastern, Western, Northern, and Southern Districts of Texas …

Read More