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Half-length portrait, from left to right: patent attorney Jan Dantz, attorney Anja-Silja Loesenbeck, patent attorney Peter Specht.

About us

For more than 90 years, we have been supporting companies, inventors and entrepreneurs in protecting their innovations and brands.

Today, we advise clients from a wide range of sectors at our offices in Bielefeld, Kassel, Munich and Freiburg, combining technical, legal and commercial expertise under one roof.

Our approach goes far beyond simply filing applications for intellectual property rights. We develop bespoke intellectual property strategies, support innovation processes and help companies transform their ideas into long-term, sustainable competitive advantages

Personal points of contact, short lines of communication and a trusting working relationship have always formed the basis of our work, because: successful intellectual property work begins with an understanding of the people and companies behind the innovations.

What defines us

International experience
We advise and represent clients from both Germany and abroad, combining international experience with personalised support and strategic foresight.
Long-term partnerships
Many clients have placed their trust in our firm for decades. We see this trust as a commitment to the highest standards of quality and personal dedication.
Technical and legal expertise
Technical understanding and legal expertise go hand in hand at our firm. This enables us to develop tailor-made solutions for complex issues.
We understand your business
Every business is unique. That is why we develop bespoke intellectual property strategies tailored to your commercial objectives and future plans.
Personalised support
Dedicated points of contact, short decision-making processes and a trusting working relationship form the basis of our consultancy. Personal and on an equal footing.

Facts & Figures

90+
Years of
experience

A trusted partner for businesses and inventors for more than nine decades

9
Lawyers and specialists

Patent attorneys, solicitors and European patent attorneys with a range of technical and legal specialisms

25
Staff

An experienced team of highly qualified specialists providing professional support to national and international clients

4
Locations

Personalised advice, short lines of communication and expert support. Regionally based and working on your behalf internationally

IP
Comprehensive expertise

Patent, trade mark, design and utility model law, as well as related areas of intellectual property law

&
National and
international

Advice for medium-sized enterprises, large corporations, start-ups and inventors both at home and abroad

Chronik

2022
Portrait Dr. Jan Specht
Patent Attorney Dr. Jan Specht joins the firm.
2018
The firm was recognized as a "Top Law Firm" for patent law by WirtschaftsWoche.
2015
New office in Freiburg
in cooperation with patent attorney
Uwe Winkler.
2012
Porträt Dr. Hubertus Kleine
Patent Attorney
Dr Hubertus Kleine becomes a partner.
2010
New office in Kassel.

Patent Attorney Dr Hubertus Kleine joins the firm.
2007
Portrait Dr. Thomas Wonderschütz
Patent Attorney
Dr Thomas WoneDr Thomas Wonderschütz
joins the firm joins the firm.
2006
75th anniversary.

Opening of a branch office in Munich.
2005
Move to new offices
at Am Zwinger 2 in Bielefeld.
2004
Patent attourney Karl-Otto Loesenbeck leaves the firmi

Solicitor Anja-Silja Loesenbeck becomes a partner.
2003
Portrait Anja-Silja Loesenbeck
Solicitor
Anja-Silja Loesenbeck
joins the firm.
2000
Patent Attorney Alexander Stracke leaves the firm.

Patent Attorney Peter Specht joins the firm as a partner takes on responsibility as a partner for the further development of the firm.

Patent Attorney Jan Dantz becomes a partner.
1999
Patent Attorney Jan Dantz
joins the firm.
1998
Patent attourney Peter Specht
joins the firm’s team.
1981
50th anniversary.
1965
Portrait Dr. Karl-Otto Loesenbeck
Dr. Karl-Otto Loesenbeck
becomes part of the firm.
1960
Patent attorney Alexander Stracke
joins the firm.
1956
The firm celebrates
its 25th anniversary
1931
Portrait Dr. Otto Loesenbeck
Patent attourney Dr. Otto Loesenbeck
The firm is founded.