Protection of intellectual property and defense against third party legal claims

In order to meet the challenges of national and global competition, it is of great importance for companies to hold their own industrial property rights. On the other hand, third party property rights can constitute a great risk for a company or considerably restrict its activities. As your reliable and engaged partner, with our advice and practice, our aim is to assure that the protectable intellectual property generated in your company is secured from imitation in order to preserve and improve your competitive position. In addition, we will assist you in the defense against third party legal claims.

Our expertise

We are a patent law firm headquartered in Schweinfurt, Germany. Some partners and associates of our patent firm have been active in legal protection of industrial property rights for 40 years and possess many years of experience in the industrial field. Our clients are active in mechanical engineering - particularly in automotive technology, agricultural machinery and household appliance industry, and in medical technology.

We offer counsel and attend to our clients's specific needs. For instance, large and medium size companies with in-house patent departments entrust us with preparing patent and utility model applications and, if needed, also with the prosecution of patent applications. For other clients, given a full power of attorney, we attend to all proceedings related to the procurement, defense and execution of property rights against third party legal claims resulting from industrial property rights.

Our long-standing experience in a variety of technical fields is an important prerequisite both for preparing application documents and for obtaining comprehensive protection in subsequent examination procedures. In foreign countries, we work with experienced and internationally recognized law firms that are either specialized in preparing and prosecuting applications or in litigating and investigating infringements

Further information

Welcome you to the website of the law firm Carstensen & Carstensen Patent Attorneys. We thank you in advance for your interest.

Patent Attorney / Partner

Dr.-Ing. Michael Gosdin LL.M.
Dipl.-Ing. Lars Carstensen
Dipl.-Ing. Jes Carstensen

Patent Attorney
Dipl.-Ing. Lothar K. Dekker

Attorney at Law
Stefan Ebner


Patents are granted for technical inventions that are new, based on an inventive step and sre industrially applicable. Furthermore, one of the important prerequisites of patentability is the technical nature of the invention. The patent endows the patent holder with a right of exclusion that is limited in terms of time and space.


Trademarks are symbols that are suitable for distinguishing goods and services of a company from those of other companies. Word marks, pictorial marks and word/pictorial marks serve as distinguishing features for the identification of the company’s own products on the market and, as strong marks, contribute substantially to a company's success.

Employees’ Inventions

Employees make by far the most technical inventions that are patentable. The rights and duties of employers and employees resulting therefrom such as, for example, duty to report, laying claim, remuneration etc., are regulated under the German Act on Employees’ Inventions.

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