Banner & Witcoff lawyers have extensive experience in patent interference practice before the United States Patent and Trademark Office Board of Patent Appeals and Interferences. The firm has actively and successfully represented clients in all facets of patent interferences, from pre-interference strategies to anticipate and provoke interferences, to preliminary motion practice and preparing preliminary statements, to taking testimony and framing the issues for final hearing, and before federal court where interference decisions are reviewed and appealed.

The subject matters of Banner & Witcoff's interferences have included a wide-ranging group of technologies, including pharmaceuticals, recombinant DNA, polymer chemistry, methods of shaping plastics, encryption technology, and chemical sensors. From pre-filing strategy through final judgment, contemporary patent interference practice is procedurally intense and vitally important. Where interference activities need to be coordinated with litigation and/or prosecution, Banner & Witcoff lawyers can provide a well-coordinated, multifaceted strategy.