london brighton oxford munich products legal advice number of employees 154 website www.dehns.com dehns formerly frank b. dehn & co. is a united kingdom firm of patent and trade mark attorneys with offices in london brighton oxford leeds and munich . it was founded in 1920 by frank bernard dehn . contents 1 the firm 2 types of work undertaken 3 notable achievements 4 external links 5 references the firm edit founded in 1920 the practice has offices in london brighton oxford leeds and munich . the firm s patent work comes from european direct clients particularly from scandinavia as well as the uk . the firm also acts directly for a large number of us fortune 500 clients and handles a significant amount of work originating in japan . most of its trade mark work comes from the uk and from us direct client companies . clients include small businesses and private inventors as well as multinational firms . types of work undertaken edit the firm advises on all aspects of patenting innovative technology registering words logos and other marks and registering original designs . services include preparation and filing of applications opposition and cancellation actions advice on areas of conflict regular watching for patents and trade marks of competitors and conducting infringement and other proceedings . industries in which it is active in patent work include pharmaceuticals biochemistry biotechnology petrochemicals polymer chemistry textiles and materials science and metallurgy . it also operates in computing electronics telecommunications automotive engineering aeronautics and civil engineering . trade mark activities include broadcasting and communications computing publishing leisure and entertainment food and drinks cosmetics finance and travel . experience in contentious matters ranges from european oppositions and appeals to worldwide infringement conflicts . in non contentious matters such as mergers acquisitions and re financings where intellectual property can form an important part of a firm s assets the practice can carry out an intellectual property audit advise on the strength of the intellectual property and record a party s interest . notable achievements edit as of 2016 it is ranked in the top tier of the annual legal 500 list of uk patent firms 1 and in the second tier of the list of uk trademark firms . 2 in 2006 it was the second largest firm in the uk by number of patent attorneys . 3 in 2005 michael butler a partner at the firm represented neal macrossan in his initial appeal hearing against a uk patent office decision not to allow macrossan s patent application . the subsequent court of appeal judgment in aerotel v telco and macrossan s application in which mr macrossan represented himself informs the uk intellectual property office s policy on patentable subject matter . 4 5 in 2002 three partners of the firm became the first uk patent attorneys to register as practising foreign attorneys before the german chamber of ip attorneys patentanwaltskammer . 6 external links edit dehns website legal 500 references edit patent attorneys . legal 500 . retrieved 2016 04 01 . trade mark attorneys . legal 500 . retrieved 2016 04 01 . the chartered institute of patent attorneys . 2006 . list of members and students . isbn 0 903932 24 5 mr macrossan was represented by an experienced patent agent mr michael butler . 2006 ewca civ 1371 pdf . retrieved 2007 09 08 . attorney firm frank b dehn & co represented him in front of the patent office ... applicants forced to rethink software patent strategies subscription content . retrieved 2007 09 08 . frank b dehn scores german first . managing intellectual property . retrieved 2007 09 08 . retrieved from https en.wikipedia.org w index.php title dehns & oldid 713007203 categories law firms established in 1920law firms of the united kingdompatent law firmsintellectual property law firms navigation menu personal tools not logged intalkcontributionscreate accountlog in namespaces article talk variants views read edit view history more search navigation main pagecontentsfeatured contentcurrent eventsrandom articledonate to wikipediawikipedia store interaction helpabout wikipediacommunity portalrecent changescontact page tools what links hererelated changesupload filespecial pagespermanent linkpage informationwikidata itemcite this page print export create a bookdownload as pdfprintable version languages add links this page was last modified on 1 april 2016 at 10 27 . text is available under the creative commons attribution sharealike license ; additional terms may apply . by using this site you agree to the terms of use and privacy policy . wikipedia is a registered trademark of the wikimedia foundation inc. a non profit organization . privacy policy about wikipedia disclaimers contact wikipedia developers cookie statement mobile view