Gaston Kroub

Gaston Kroub is a founding partner at Kroub, Silbersher & Kolmykov PLLC, an intellectual property litigation boutique based in New York City. His practice focuses on intellectual property litigation and related counseling, with a strong emphasis on patent matters. He also serves as a leading consultant on patent issues for the investment community through Markman Advisors LLC.

Kroub’s experience spans both plaintiff and defendant-side patent litigation, with an equal number of appearances in tracked cases (two for plaintiffs and two for defendants). His firm's practice areas include patent litigation, post-grant review proceedings (including Inter Partes Reviews), copyright litigation, trademark litigation, and trade secret litigation. He works with a diverse client base ranging from individual inventors and private ventures to Fortune 500 companies.

Notable cases in his portfolio include acting as lead counsel for the plaintiff in Fractus, S.A. v. Geotab Inc., a patent infringement case involving antenna technology for IoT devices and telematics. Fractus and a co-defendant, Verizon, later settled their dispute. Kroub also served as counsel of record for the defendant in Unified Patents v. Messageloud Inc., indicating experience with patent challenges often associated with non-practicing entities (NPEs). The firm explicitly highlights its expertise in post-grant review proceedings, including IPRs, for both patent holders and those accused of infringement. Kroub himself has written on the importance of the PTAB and IPRs in modern patent litigation practice.

Gaston Kroub is admitted to practice in New York and New Jersey, and is registered with the USPTO (Reg. # 51,903). He earned his J.D. from Cardozo School of Law and a B.A. in History/Pre-Med from New York University, College of Arts and Science. Prior to co-founding Kroub, Silbersher & Kolmykov, he was associated with firms such as Locke Lord, LLP and Greenberg Traurig, LLP.