There is a clear, simple path for you to take.

Patent, Trademark and Copyright Attorneys Specializing in Litigation.

There is a clear, simple path for you to take.

Patent, Trademark and Copyright Attorneys Specializing in Litigation.

Your Brilliant Idea Is Our Business

As an established intellectual property (IP) law firm in Sacramento, we are well-versed in the legal issues surrounding patents, trademarks, copyrights and trade secrets. If you need to protect your new idea, we can efficiently take you through the necessary steps. If you are dealing with an infringement, one of our experienced civil litigators can represent you.
“John P. Costello is in the same league as the star patent attorneys I used at
IBM Research where I spent 31 years getting 60 patents filed and issued.
It is a joy to work with folks who “get it”.”

– Jerry M. Woodall, Professor Emeritus, University of California, Davis
Contact Costello Law Corporation to protect your idea. We are known for our fast and accurate intellectual property work and the high level of personal attention we provide to every client. We invite you to read more about our firm’s recent successes.

Providing Exceptional Client Service In Complex Litigation Cases

Our attorneys are registered with the United States Patent and Trademark Office, and we represent individual inventors, startup businesses, midsize companies, entrepreneurs, family-owned businesses and academic institutions throughout California. Whether your matter can be resolved through the application process or you need a strong litigator on your side, we encourage you to schedule a consultation at our office.

Meet Attorney John Costello


A Full Range Of Intellectual Property Legal Services

Though our law firm is small, we are able to marshal the resources and manpower to assist you in any intellectual property matter. From registration to litigation, we provide a full range of intellectual property legal services, including:

Why You Need An Experienced IP Attorney

If you pursue a patent or other intellectual property registration on your own, you risk making serious mistakes that could cost you a lot of time, money and ultimately, your idea. For more information about the role our attorneys play, visit our page on why you need a patent lawyer.