Dehns History

1920

Dr. Frank Bernhard Dehn opens his door to the public in London. Practising alone, he steadily attracts and grows his client base.

1939

The Frank B Dehn partnership expands with the addition of his son, Stanley.

1940 - 1960s

Continued growth.

1964

Frank B. Dehn dies.

1965

Dehns’ Trainee, Arnold Watkins, wins the Gill prize on qualifying as a patent attorney, for achieving the highest marks in the country.

1972

Brighton office opens.

1977

Dehns’ Trainee, and future Senior Partner, Michael Butler, wins the Gill prize on qualifying as a patent attorney, for achieving the highest marks in the country.

1978

Stanley Dehn retires from the firm.

1979

The European Patent Office (EPO) opens in Munich, shortly after which Dehns opens premises nearby.

1981

Dehns’ Trainee, Stephen Jones, wins the Gill prize on qualifying as a patent attorney, for achieving the highest marks in the country.

1984

Dehns’ Trainee, and future Head of the Engineering Group, Christopher Davies, wins the Gill prize on qualifying as a patent attorney, for achieving the highest marks in the country.

1998

Dehns’ Trainee, Matt Dixon, wins the Gill prize on qualifying as a patent attorney, for achieving the highest marks in the country.

1999

Dehns moves to larger premises in Munich.

2002

Oxford office opens to meet demand from the University-linked organisations.

Three Dehns partners become the first UK patent attorneys to register as practising foreign attorneys before the German Chamber of IP Attorneys (Patentanwaltskammer).

2003

Dehns’ Trainee, Katherine Mabey, wins the Gill prize on qualifying as a patent attorney, for achieving the highest marks in the country.

2006

Dehns’ Trainee, Andrew Chiva, wins the Gill prize on qualifying as a patent attorney, for achieving the highest marks in the country.

2007

Dehns’ Trainee, Adam Taylor, wins the Gill prize on qualifying as a patent attorney, for achieving the highest marks in the country.

2008

Dehns’ Trainee, Matthew Cassie, wins the Gill prize on qualifying as a patent attorney, for achieving the highest marks in the country.

Dehns ranked by 'Chambers UK' as a Tier 1 firm.

2009

All offices are permanently staffed and fully interlinked with modern communications. Total staff of over 150 includes 60+ graduate scientists in a full range of technical disciplines.

Dehns ranked by 'Chambers UK' as a Tier 1 firm.

2010

Dehns ranked by 'Chambers UK' as a Tier 1 firm.

2011

After more than 90 years, Frank B Dehn rebrands as "Dehns", with a new modern look, but our commitment to providing the best service and advice to clients in a rapidly changing and demanding field remains the same.

2012

Dehns ranked by 'Chambers UK' as a Tier 1 firm.

2013

'Dehns Germany' established as a result of a partnership between Dehns and KGP, an experienced firm of German patent and trade mark attorneys.

Dehns ranked by 'Chambers UK' as a Tier 1 firm.

2014-2015

Dehns opens an office in Manchester. Dehns also opens an office at Discovery Park in Kent, one of Europe's largest science parks.

Dehns ranked by 'Chambers UK' and 'Managing Intellectual Property' as a Tier 1 firm in 2014 and 2015

2016

Dehns opens an office in Cambridge, taking the total number of offices to 8, its total staff to more than 200, with more than 93 fee earners and 31 partners.

Dehns ranked by 'Chambers UK' and 'Managing Intellectual Property' as a Tier 1 firm.

2017

Dehns Germany moves to their current office in Theresienstraße.