Best consulting and coaching – in all areas of intellectual property protection


At TERGAU & WALKENHORST, we protect your rights: effectively and long-term. We are patent attorneys, patent scientists and will fight with our extensive technical and legal training, long-standing industry experience and various practical skills to ensure your rights stay protected. Armed with our comprehensive know-how, we will review, obtain and protect your patents, trademarks and designs. And if you happen to have property rights, we can also manage them for you. In Germany and everywhere else in the world.
Moreover, we will represent you in ​​copyright and competition disputes, monitor the competition's intellectual property rights and advise you competently on how to exploit intellectual property rights through licensing or sale. This also undoubtedly includes preparing legally-compliant licensing and know-how contracts. And, by all means, we keep abreast of new developments in Domain Law  and IT-related inventions.

Protecting your rights – everywhere in the world

We defend our clients' technical property rights, trademarks and designs at an international level, because we have the power of representation in Court not only before the German Patent and Trademark Office, but also before all German courts, before the European Patent Office and the European Union Intellectual Property Office (EUIPO) in Alicante, Spain. Moreover, we pride ourselves in having long-standing, close contact with patent attorneys and attorneys at law from all over the world, as well as our own experience abroad, which allows us to have access to a worldwide network.
A particular asset, both to us and to our clients, is Attorney at Law Yanyun Zhang, who is originally from China, grew up bilingual and obtained his attorney license in Germany. With him on our side, our Frankfurt location places special emphasis on the Chinese market.

Competent consulting – for more than a century


The law firm TERGAU & WALKENHORST has its roots in Nürnberg. In 1902, Heinrich Fieth founded his patent attorneys office in the North Bavarian industrial metropolis. In 1912, Ludwig Brake joined the firm as a partner and continued to manage it until the 1930s. In 1939, Dr. Erich Wetzel takes over the firm as a sole proprietor, and manages it through World War II and the reconstruction period. In 1962, Enno Tergau joined the firm as an apprentice and subsequently became a patent attorney and a partner. After Dr. Erich Wetzel's death in 1973, he is the one managing the firm and starting as of 1974, together with his associate, patent attorney Hans Ludwig Pohl, under the name Tergau & Pohl Patentanwälte.

Dipl.-Ing. Dietrich Tergau joined the firm in 1990, and became a patent attorney in 1993 and a partner in 1997. In 2000, patent attorney Dr. rer. nat. Andreas Walkenhorst establishes the office in Frankfurt am Main. Since January 01, 2011, TERGAU & WALKENHORST Patentanwälte – Rechtsanwälte has continued its tradition, founded in 1902, at its locations in Nürnberg and Frankfurt am Main.


Knowledge and competence gained from professional networks

Our permanent contact with important representatives of our industry is just as important to us as the ongoing updating of our legal knowledge. For this reason, we are a member of strong professional associations and other specialist panels.
TERGAU & WALKENHORST is a member of the following:

•   Institute of Professional Representatives before the European Patent Office (
•   Fédération Internationale des Conseils en Propriété Industrielle (
•   German Patent Attorneys Association (Bundesverband Deutscher Patentanwälte) (
•   International Association for the Protection of Intellectual Property (
•   German Association for Intellectual Property and Copyright (Deutsche Vereinigung für gewerblichen Rechtsschutz und Urheberrecht e.V.) (
•     Intellectual Property Experts Group (Vereinigung von Fachleuten des Gewerblichen Rechtsschutzes) (
•    Bundesverband mittelständische Wirtschaft (

•    Intellectual Property Owners Association [German Association for Small and Medium-Sized Businesses] (