Our focus: your ideas

We safeguard your ideas with expertise, passion and creativity to make sure your innovative power and pioneering spirit pay off.

Our journey: together

Working together is the best way to solve complex problems, which is why team spirit is our top priority at all times.

Our approach: combative

Whether in official examination procedures or in litigation, we have been fighting for our clients for more than 70 years. We are well versed in tactics and always ready to come up with custom-made solutions to any problem.

Our methods: progressive

From encrypted communication to paperless office, we are every bit as much in tune with the times as you are.

Your specialists in patent, trademark and design law

Our firm has been the first port of call for all matters relating to patent, trademark and design law since 1949.

Thanks to our merger with Mehler Achler Patentanwälte in 2021 and the opening of our Munich office in 2024, we have expanded our capabilities for our clients and offer consolidated expertise.

Start-up consulting

Protecting ideas, patenting inventions, practicing innovation: These are the building blocks of our expert start-up consulting, which will help you with all the aspects involved in founding a company.

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About us

Whether you are a solo inventor or a big industrial player, our firm in Wiesbaden has been advising German and international clients on all areas of protection of industrial property rights for more than 70 years.

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News and knowledge

Register a design: How to proceed

A unique design gives a product an unmistakable identity. To prevent the design from being copied by third parties, design law offers effective protection. By registering a design, you receive the exclusive right to use your design for up to 25 years.

Read more - Register a design: How to proceed

EUIPO trademark search: What matters

The trademark search is a crucial step before applying for a trademark and therefore a central component of the trademark application process, especially if the application is to be filed at European level via the European Intellectual Property Office (EUIPO).

Read more - EUIPO trademark search: What matters

Opposition to a patent: How to proceed

A granted patent is a strong property right, but it does not always meet the legal requirements. Companies or individuals who feel that their rights are compromized by a patent have the option of filing an opposition against a patent. This procedure enables a cost-efficient review of patentability by the competent authorities.

Read more - Opposition to a patent: How to proceed

Design law: How to legally protect your products

Design law represents a key protection option for creative and innovative design ideas. Companies, designers and developers benefit from this legal instrument to protect their unique designs from imitation and to strengthen their market position. This article explains the basics of design law, the requirements for protection and the enforcement options.

Read more - Design law: How to legally protect your products

Technical expertise

We will be happy to advise you on all technical fields, such as those relating to mechanics, mechanical engineering, electrical engineering and physics, organic and inorganic chemistry, biochemistry and biotechnology, pharmacy, medicine, medical technology and software.

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Legal expertise

From patents and utility models to trademarks, registered designs and Internet domains in Germany and on an international basis, we are on hand at all times to provide our clients with the full breadth of our expertise.

Globe bleed

WSL worldwide

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opposition and invalidity proceedings

in Europe

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patent applications

in North America

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trademark applications

in Central and South America

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intellectual property cases

in more than 20 African countries

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design applications

in Asia

Careers at WSL

Talent. Enthusiasm. Enjoyment.

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