Experience + Proven Methodology = Consistent Accuracy

Welcome to Sherman Patent Search Group. We are a premier, 100% US-based patent search firm headquartered in Pasadena, CA, with additional offices in Washington, D.C. and Chicago, Ill. We bring decades of diverse, collective experience in patent searching, prosecution, and litigation, with expertise in all technology areas. Learn more about our team here. Our team comprises former USPTO Examiners, patent attorneys, and patent agents – we focus on translating our deep experience into powerful patent research. Having successfully searched thousands of cases for patentability, FTO, state of the art, and invalidity, in a wide breadth of subject matter (mechanical, biotech, electrical, business methods/software, chemical, pharmaceutical), we have achieved highly efficient and time-tested search methodologies. Our clients range from Fortune 500 companies, to law firms (large and boutique), to independent inventors. Our goal always remains the same: To provide you with the most accurate, useful results, at the most cost-effective price point. We look forward to working with you.

Eugene Lhymn
President and Founder

CA Office (Pasadena)DC OfficeIL Office (Chicago)
225 S. Lake Ave, Suite 3002331 Mill Road, Suite 100
190 S LaSalle St, Unit 2100
Pasadena, CA 91101Alexandria, VA 22314
Chicago, IL 60603
(O) 626-432-7292(O) 703-224-8918(O) 312-477-5846

Client Testimonials

“I have worked with Eugene for many years on all types of patent search projects from drafting provisional applications to creating massive support documents for accelerated examination applications. In all cases Eugene and Sherman Patent Search provide on-target search results in a timely, economical manner across a broad spectrum of technologies. Sherman Patent Search has proven to be highly adaptable on project requirements and is worthy of your search dollar.” – Nick Witchey, Ph.D., Reg. Patent Agent #63,481, Head of Intellectual Property

“In my 25 years of practice, Sherman is the first patent search firm that I rely upon consistently. Sherman impresses me with high quality searches for me in the electrical, software, medical device and mechanical arts. They locked me in, though, with their report format. They have an uncanny way of knowing what we want and their reports make the attorneys in our firm more efficient.” – Steve Sereboff, Founding Partner, SoCal IP Law Group

“Patent searches are a critical part of our work – SPSG is our go-to professional search firm. They’re efficient, comprehensive, and take a hands-on approach with their operation. SPSG combines the 3 things you look for in a search firm: timeliness, accuracy, and reasonable rates. Highly recommended. I have not used a different search firm in the last two years, whether it is for right to use, patentability, or invalidity. And I and my clients are much more comfortable using a domestic search firm rather than one where our clients’ confidential information gets sent offshore.” – Jeff Sheldon, Managing Partner, Published IP author