• Please search to find attorneys
Close Btn


Sophisticated entrepreneurs and executives know that thriving businesses are fueled by innovative ideas that must be protected vigorously. With a team comprised of former in-house senior IP counsel, engineers and registered patent attorneys, CSG seasoned intellectual property professionals understand the challenges you face and are here to support you.

Trusted advisors to Fortune 100 companies and dynamic start-ups alike, CSG’s dedicated patent team has helped clients secure countless patents both domestically and abroad. Our proven track record and value-driven counsel have positioned CSG’s patent attorneys as invaluable advisors to IP executives and their teams.

Patent Searches and Opinions: CSG’s patent attorneys conduct thorough patentability searches to determine patentability and the scope of protection available for our client’s inventions. We also conduct validity and right-to-use searches in order to counsel our clients with respect to third party patent rights. Based upon these searches, our experienced attorneys help clients develop strategies to avoid infringing upon the patent rights of others while protecting the rights to their own inventions.

Patent Preparation and Prosecution: Our extensive experience preparing and prosecuting patent applications in many fields, including mechanical, electrical, computer, business methods, data networking, e-commerce, fintech and optical, has resulted in our clients’ ability to build solid and successful patent portfolios. Our extensive network with foreign patent attorneys allows our clients to protect their inventions not just in the US, but throughout the world.

With our counsel, many start-up businesses obtained patent protection on inventions that launched successful business ventures. Keeping our clients’ budgets and priorities in mind, we pursue efficient prosecution strategies, including examiner interviews and continuation applications, to obtain valuable patents for our clients. We also handle appeals of final United States Patent and Trademark Office (USPTO) decisions as well as other proceedings before the Patent Trial and Appeal Board.

Third Party Defensive WorkIn today’s era of "patent assertion entities", all companies, both large and small, are at risk of becoming a target of a patent assertion.  CSG evaluates third party claims against our clients' products and services and defends them against these assertions.

CSG is ranked among the top patent firms by Intellectual Asset Management’s “Patent 1000: The World’s Leading Patent Practitioners,” and key members of the patent team are recognized regularly in Chambers USA: America’s Leading Lawyers for Business.

July 2021

U.S. Supreme Court Limits Patent Law Doctrine of Assignor Estoppel

On June 29, 2021, the Supreme Court of the United States issued its ruling in Minerva Surgical, Inc. v. Hologic, Inc. limiting the patent law doctrine of assignor estoppel. The doctrine of assignor estoppel limits a party who has assigned a patent from later challenging the validity of that patent. The doctrine of assignor estoppel is grounded in the principle of fair dealing. When a party assigns its patent rights, the assignor makes an implicit representation to the assignee that the patent at issue is valid. However, in later raising an invalidity defense, the assignor disavows that warranty. In doing so, the assignor seeks to profit doubly—by gaining both the price of assigning the patent and the continued right to use the invention it covers.
July 2021

U.S. Supreme Court Ruling Upholds Constitutionality of PTAB ALJ Structure

On June 21, 2021 the U.S. Supreme Court, in U.S. v. Arthrex, case number 19-1434, ruled on the constitutionality of the current structure of the Patent Trial and Appeal Board (PTAB), a tribunal within the U.S. Patent and Trademark Office where the validity of an issued patent can be challenged before administrative law judges (ALJs) during an inter partes review or a post grant review proceeding.