DeHeng Chen, LLC offers a full range of intellectual property services. We handle both United States Patent & Trademark Office (USPTO) work and Patent Cooperation Treaty (PCT) filings. We are also involved in trademark, technology transfer, trade secrets, and copyright work.

We work with an extensive group of foreign law firms and patent and trademark agents to provide high-quality and cost-efficient protection of intellectual property rights. Together with our foreign affiliates, we provide efficient, full-scale legal services in the United States and abroad.

In addition to patent prosecution, DeHeng Chen, LLC also offers the following services:

•	Litigation.	We file Declaratory Judgment Motions to invalidate patent and launch patent infringement litigation;
•	Opinion Work.	We issue noninfringement opinion letters, patentability opinions, and due diligence related to ownership and intellectual property transactions. We also handle inventorship disputes;
•	Copyright and Trademark Infringement.	We have represented several retail clients in infringement cases; and
•	Regulatory Compliance.	We have helped a number of nutraceutical companies comply with FDA and state regulations.