WHDA is a full service intellectual property law firm. Our patent lawyers have strong technical backgrounds in the mechanical, electrical, optical, chemical, pharmaceutical, metallurgical, and biotechnical arts. We handle patent and trademark preparation and prosecution for clients around the world, and are among the top 25 patent firms in the United States. In addition to practicing before the USPTO, we litigate in the District Courts and the International Trade Commission. We also handle interferences, post-grant procedures, licensing agreements, counseling, as well as patentability, validity and infringement opinions.