Utility, Design and
Plant Patent Preparation
& Prosecution

Infringement & Validity
Expert Opinions

Litigation &
Post Grant Procedures

Trademark & Copyright

Maintenance Fees


Located about a 5-minute walking distance to the White House grounds, our current main office is in the heart of Washington, D.C. Established in 1970, the KRATZ, QUINTOS & HANSON, LLP law firm has been providing clients with high quality legal services and is now well recognized for our pioneering work in making the intellectual property system more accessible to all. We are proud of our achievement and remain an international intellectual property law firm practice dedicated to our original and new clients.


Since 1970, our firm has been preparing and prosecuting patent applications before the U.S. Patent and Trademark Office in a wide range of technologies in the fields of electronic, electrical, mechanical, chemical and biotechnology inventions, primarily for multi-national corporations.


Our representative clients include multiple multi-national Fortune Global 200 corporations, as well as regional mid-size companies.

Representative Clients