Mark Nelson has appeared in more than 100 patent cases nationwide, serving as lead trial counsel in more than 50 patent cases. The Southwest Office promotes innovation, connects entrepreneurs to resources, supports STEM programs, and recruits diverse talent.Robert S. Hill is a Dallas intellectual property attorney who focuses his practice on representing clients in complex patent litigation cases. Here is the general, very simple procedure of validation: To request a re-evaluation, you have to fill out the re-evaluation form. About 1 million patent applications are filed in China, about twice as many as in the US, or more than 6 times as many as in Europe. Approval sought after expiration of listed patent(s); Invalidation or noninfringement. Unlawful importation of AceK sweetener from China violates Celanese patent. , a subsidiary of Sealed Air Corporation, in a total defense win in a patent infringement suit in Marshall. Dallas. Office. Dallas. 1717 Main Street, Suite 2800. Dallas, Texas 75201.