US Patents

As in other legal jurisdictions, a United States patent grants its holder an exclusionary right. This right excludes others from making, using, offering for sale, or selling the invention in the United States or importing the invention into the United States. A United States patent does not grant a positive right to use. Third party patents can, therefore, exist which preclude a use despite the existence of an issued United States patent. It is therefore important to clarify the patent landscape by conducting a patent search before filing for United States patent protection.


US Trademarks

A trademark identifies and distinguishes the source of a person’s or a company’s products from those of another entity. A trademark can include any word, name, symbol (such as a logo), device, sound, color, form or pattern, or any combination thereof, used, or intended to be used, in commerce in the United States.


IP Contracts

Dr. Thot garnered extensive M & A experience while working at two Düsseldorf law firms. This experience was reinforced and fortified during his tenure at two Leverkusen-based chemical companies and during his practice with two United State patent law firms. Dr. Thot therefore possesses extensive expertise in drafting and negotiating intellectual property contracts as well as in corporate restructuring and portfolio measures.


Dr. Norman B. Thot

United States Patent Attorney
Attorney at Law (California)
European Patent Attorney

Office Delivery Address
Hauser Ring 10
40878 Ratingen

Mailing Address
P.O. Box 10 17 56
40837 Ratingen

+49 (0)2102 168928-0
+49 (0)2102 168928-20


Dr. Thot’s expertise in the field of patents includes analyzing patentable inventions, filing patent applications and their worldwide prosecution, directly representing clients before patent offices and courts in matters such as opposition and appeal proceedings, enforcing patent rights, strategically reviewing patent portfolios, preparing freedom to operate, non-infringement and invalidity opinions, conducting strategic patent planning, and the conducting pre-publication reviews of scientific publications with respect to intellectual property issues.

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