Kyle Tsui

Kyle Tsui


Alexandria, VA

Kyle K. Tsui focuses his practice on the preparation and prosecution of patent applications and on post-grant proceedings including inter partes review and ex parte reexaminations.

Kyle has represented individual inventors and companies of all sizes. Thanks in part to his experience as an Examiner in the U.S. Patent and Trademark Office, Kyle is very familiar with all aspects of patent prosecution, including procedures for initial filing of an application, prosecution of the application and appeals of rejections before the Patent Trials and Appeals Board (PTAB).

Kyle uses his training in mechanical engineering and his experience as a programmer to serve his clients in a variety of areas including medical devices such as stents, catheters and sterilization devices, image forming and image processing systems, vehicle control systems and automotive components, solar panels and solar panel components, air conditioning systems, heat exchangers, packaging materials, filling and packaging machines, remote sensing devices, network intrusion systems, threat detection systems, insulin pumps and continuous glucose monitors, search engines and Internet advertising systems, remotely operated vehicles, display devices, optical components, payment transaction systems, mobile payment systems, and mobile devices. Kyle has prepared non-infringement and validity opinions in both mechanical and software technologies.

In post-grant proceedings, Kyle has represented both patent owners seeking to defend their valuable intellectual property and petitioners or third party requesters seeking to challenge issued patents. Kyle also has experience in preparing invalidity contentions, non-infringement positions, and expert reports for proceedings before the International Trade Commission and before U.S. District Courts.

With respect to inter partes review, Kyle has experience in all aspects of these proceedings, including the drafting of the petitions, replies, motions, and other papers; preparation for oral hearing; and appeals to the Federal Circuit. Kyle has also worked on all aspects of inter partes and ex parte reexamination, including drafting of requests for reexamination, patent owner responses, third party comments and appeals to the PTAB.

Prior to joining Buchanan, Kyle worked as a Patent Examiner in the U.S. Patent and Trademark Office, where he examined applications in the computerized vehicle controls and navigation systems arts. Before entering the patent industry, Kyle was a programmer for Dell, Inc., where he worked on an internal security framework and the company’s global content generation framework. While at Dell, Kyle received an executive level award for his work on the redesign of the company’s content generation framework, along with numerous director awards for his work enhancing the content generation framework and the site’s performance.