Our representation of clients in the chemical industry is both deep and broad. Of our close to 300 attorneys and patent scientists, dozens hold degrees in chemistry, chemical engineering, or materials science and many also have advanced degrees and significant industry and research experience.

The research and business interests of our clients span a wide range of chemical and chemical engineering technologies including pharmaceuticals, drug carriers, drug manufacturing, nanomaterials, mining chemicals, advanced composite materials (such as carbon fiber composites), optical materials, fuel cell materials, battery materials and engineered materials.

Our in-depth technical expertise, combined with our proven litigation success, allows our large roster of chemical clients to grow their businesses through a coordinated, comprehensive IP strategy. We are equally adept at assisting both start-ups and large multi-national corporations with a gamut of IP services including domestic and international patent and trademark prosecution; counseling and negotiation regarding licensing and strategic alliances; and all aspects of enforcement litigation.

Our attorneys have experience in all areas of the Chemical arts, including:



Combinatorial Chemistry

Food Chemistry


Oil and Gas

Pharmaceutical Chemistry


Analytical Chemistry

Chemical Engineering

Cosmetics & Personal Care Products

Fuel Cells & Batteries

Mining Chemicals

Organic Chemistry

Physical Chemistry


Representative Engagements

American Pacific Corporation

BF Goodrich (composite materials)

Cytec Industries (engineered materials and carbon fiber composites)

Nitto Denko (adhesive polymers, drug carriers, nanomaterials, optical materials, water filtration membranes and life sciences)

Scientific Pharmaceuticals

Tosco Corporation


Talbert Fuel Systems Patents Co. v. Unocal Corp., Union Oil Company of California, and Tosco Corp., 98-0412 CBM (RNBx)

The firm successfully defended Tosco Corp. in a patent infringement lawsuit brought by Talbert Fuel Systems Patents Co. The patent at issue related to automobile gasoline compositions having certain characteristics that were asserted to result in reduced emissions without sacrificing key gasoline performance parameters. Tosco, now owned by Conoco-Phillips, is a leading manufacturer of petroleum products, including reduced emission gasoline compositions that were alleged to infringe the patent. Early in the case (before any depositions or substantial document production), we obtained for Tosco a favorable claim construction ruling and moved for summary judgment of noninfringement. Talbert conceded that there was no literal patent infringement under the district court's claim construction. The district court concluded that there also was no infringement of the patent under the doctrine of equivalents and granted Tosco's motion for summary judgment in its entirety. Tosco had sold, and was continuing to sell, millions of gallons of the accused gasoline annually. The district court's claim construction and judgment of noninfringement were both affirmed on appeal. The successful result in this case not only avoided payment of substantial royalties sought by Talbert, but also prevented the issuance of a potentially devastating injunction. Published decision at 347 F.3d 1355 (Fed. Cir. 2003). Published prior decision at 275 F.3d 1371 (Fed. Cir. 2002).

California-Pacific Labs, Inc. v. Nalge Nunc Int'l Corp.

Represented Defendants, Nalge and Apogent, and obtained summary judgment dismissing most of plaintiff’s causes of action.

Archie Comic Publications, Inc. v. Chaoyang Baolansi Meticulous & Chemical Co., Ltd.

Successfully represented applicant seeking to register trademarks for cosmetics in opposition action before the TTAB.

In the Chemical Processing article “Non-Compete-Ban Best Practices For The Chemical Industry,” partner Joseph Reisman commented on the recently promulgated Federal Trade Commission (FTC) final rule...
WASHINGTON, D.C., April 23, 2024 – Knobbe Martens congratulates partner William Zimmerman and associates Justin Culbertson and Christopher Lewis on being recognized by Washington, D.C. Super Lawyers...
IRVINE, Calif., March 28, 2024 – Knobbe Martens is proud to announce that the firm and several of its professionals have achieved outstanding rankings in the 2024 Patexia Patent Prosecution...