4th Floor 1420 K St., N.W. Washington, D.C. 20005 Telephone: (202) 659-2930 Facsimile: (202) 887-0357 (202) 331-7519 (202) 887-5155   Email: correspondence@kqhpatentlaw.com   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, and Hanson law firm has been providing clients with high quality legal services and is now well recognized for our pioneering work in making the U.S. patent system more accessible to all. We are proud of our achievement and remain an international IP practice dedicated to our original and new clients.