A brief look in the here and now - The TSWpat! of the present

Merger

After seven years of a shared journey as part of the TSWpat! Group, but still operating as independent companies, we have decided within the context of our 75th anniversary to simplify and strengthen the group structure. All the companies in the TSWpat! Group have been merged into the company with the longest history, Troesch Scheidegger Werner AG. Our ongoing collaborative work is now also represented legally.

Leadership team

From April 2026 on, we are pleased to announce that the leadership team of the TSWpat! Group has been further extended:

  • Oliver Horlacher, M.Sc. ETH / Dr. Sc. ETH, European and Swiss Patent Attorney

Since January 2020, the leadership team of the TSWpat! Group has been extended by three new partners, all of them being well-known and already established in the TSWpat! group, namely:

  • Brian Aeschlimann, M Law University of Zurich / LL.M. Duke University, Attorney at Law, Trademark Attorney ASPTA
  • Alexandra Dieter, M.Sc. Chemie TU München / Dr. rer. nat. TU München, European and Swiss Patent Attorney, Registered Representative before the Unified Patent Court
  • Thomas Speck, Dipl. Phys. ETH, European and Swiss Patent Attorney, Registered Representative before the Unified Patent Court

With the present extension and rejuvenation of the team of partners, we are able to pursue the continuous and long-term support of our clients in the field of intellectual property rights in a sustainable way.

A brief look back - Time lapse of TSWpat!

TSWpat! Troesch Scheidegger Werner AG (Zumikon/Zurich and Lucerne)

(from left to right Adrian Rappold, Dr. Alexandra Dieter, Thomas Speck, Brian Aeschlimann)
2026

Dr. Oliver Horlacher becomes partner of Swiss IP Partners Holding AG.

2026
2024

Troesch Scheidegger Werner AG will continue to provide consulting services to its clients through its branch office in Lucerne. Clients of the Sargans branch will now be served directly from the headquarters.

2024
2020

Troesch Scheidegger AG establishes a branch office in Lucerne and continues to operate its office in Sargans to continue serving its clients of the former TSWpat Luzern AG and OK pat Ltd.

2020
2020

In form of a merger Troesch Scheidegger Werner AG takes over its partner companies OK pat Ltd., TSWpat Luzern AG and Patentanwaltsbureau Jean Hunziker AG.

2020
2020

75 years TSWpat! - Within this anniversary it was decided to simplify the previous company structure.

2020
2020

Brian Aeschlimann, Dr. Alexandra Dieter and Thomas Speck become partners of Swiss IP Partners Holding AG.

2020
2013

Swiss IP Partners Holding AG acquires Troesch Scheidegger Werner AG. This company acts as managing partner of the TSWpat! Group, consisting of Troesch Scheidegger Werner AG, OK pat AG, TSWpat Luzern AG and Patentanwaltsbureau Jean Hunziker AG.

2013
2004

Adrian Rappold becomes a partner of Troesch Scheidegger Werner AG. He assumes the assignments of the retired Dr. Hans Scheidegger.

2004
2000

The firm moves its head office from Zurich-Oerlikon to Zumikon.

2000
1996

André Werner, son of Georges Werner, joins Troesch Scheidegger Werner AG as partner. Dr. Hans Troesch retires as patent attorney.

1996
1990

The company, continuing as Scheidegger, Werner & Co, merges with Dr. Troesch AG. Together these companies form Troesch Scheidegger Werner AG (TSWpat!).

1990
1985

Georges Werner joins Scheidegger, Zwicky & Co. as partner.

1985
1968

Dr. Hans Scheidegger jun. takes over the office of his father and continues its operations with his partner Heinrich Zwicky under the firm Scheidegger, Zwicky & Co.

1968
1961

Dr. Hans Troesch establishes his patent attorney firm. His son Dr. Jacques Troesch joins Dr. Troesch AG shortly after its establishment.

1961
1945

Dr. Hans Scheidegger sen. establishes an office for Intellectual Property in Zurich.

1945

OK pat AG (Zug and Sargans)

2020
In form of a merger Troesch Scheidegger Werner AG takes over OK pat AG and continues operating the office in Sargans. The branch office Lucerne of Troesch Scheidegger Werner AG continues to serve the clients of the region Zug.
2020
2014
The office moves to a new address at Industriestrasse 47 in Zug.
2014
2013
Swiss IP Partners Holding AG acquires OK pat AG. The company becomes a member of the new TSWpat! Group.
2013
2001
Dr. sc. nat. ETH Theodor Müller is appointed as managing director of the new branch office in Sargans.
2001
2000
Dr. Ing. Christian Heusch assumes the management of the company.
2000
1986
Klaus Hotz establishes OK pat AG in Zug as an internationally oriented office for all areas of Intellectual Property.
1986

TSWpat Luzern AG (Lucerne)

2020
In form of a merger Troesch Scheidegger Werner AG takes over TSWpat Luzern AG. The branch office of Troesch Scheidegger Werner AG continues to serve the clients in the region of Lucerne.
2020
2013
Swiss IP Partners Holding AG acquires TSWpat Luzern AG. The company becomes a member of the new TSWpat! Group.
2013
2012
The new company TSWpat Luzern AG opens its office in the center of Lucerne.
2012
1994
Andreas Kemény retires from the daily business.
1994
1992
To ensure the succession Troesch Scheidegger AG acquires Kemény AG Patentanwaltbüro.
1992
1965
Andreas Kemény establishes Kemény AG Patentanwaltbüro in Lucerne.
1965

Patentanwaltsbureau Jean Hunziker AG (Zumikon)

2020
In form of a merger Troesch Scheidegger Werner AG takes over Patentanwaltsbureau Jean Hunziker AG.
2020
2013
Swiss IP Partners Holding AG acquires Troesch Scheidegger Werner AG. Through this acquisition Patentanwaltsbureau Jean Hunziker AG becomes a member of the new TSWpat! Group.
2013
1997
To ensure the succession Troesch Scheidegger AG acquires Patentanwaltsbureau Jean Hunziker AG and enables Jean Hunziker to retire from the daily business.
1997
1963
Jean Hunziker establishes his Patentanwaltsbureau Jean Hunziker AG in Zurich.
1963