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.

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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

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Pirates Beware: Amazon Patent Aims to Sink Shipments of Counterfeit Products

Gone are the days of pirate ships bristling with cannons and chests of stolen treasure.  Modern pirates operate computers, and their valuable targets are often intangible.  Nonetheless, their thievery remains a scourge of modern commerce . . . . at least it once was. Amazon’s newly patented technology (US10664797B2) is …

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Fee Structures for Managing Patent Litigation Costs

There’s no way around it: patent litigation costs can come as a surprise to those who have not been involved in it.  One economic survey estimated that, in 2019, the cost of patent litigation through trial and post-trial motions ranged from $700,000 to $4 million[1] for cases where $1 million …

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