Jason Dainty > Haseltine Lake Kempner LLP > Leeds, England > Lawyer Profile

Haseltine Lake Kempner LLP

Work Department

Trade Mark and Litigation team


Advises on contentious and non-contentious IP matters, and with a specialism of brand protection and strategy. Jason is equally at home in the courts and trade mark registries. Jason files trade marks for clients in the UK and Europe and manages worldwide trade mark portfolios. He is experienced in bringing and defending trade mark oppositions in the High Court and at the UK and EU trade mark registries, as well as managing disputes involving trade marks, passing off, design rights, database right, domain names, trade secrets and copyright. He is experienced in the field of lookalike products, ex-employee confidential information and actions against liquidators. He has brought actions in the High Court, obtaining injunctions against liquidators and administrators to prevent the sale of client assets. Jason also drafts and advises on a variety of commercial IP agreements including R&D agreements, confidentiality agreements and licences. He advises Kurt Geiger, Giorgio Armani, Findus, Birdseye, Iglo, Callaway Golf, Ascential (WGSN, Retail Week), the Restaurant Group (Frankie & Benny’s, Chiquito), Ebuyer.com and Wren Kitchens, on brand protection and dispute resolution.


Irwin Mitchell 1999-2007; Robinsons 2007-09; founding/managing partner Kempner & Partners 2009-2019, partner Haseltine Lake Kempner LLP 2019-to date.




International Trade Mark Association

Institute of Trade Mark Attorneys


Sheffield Hallam University (1998 BA (Hons) Law); College of Law, York (1999 LPC); Bristol University (2003 Postgraduate Diploma in Intellectual Property Law and Practice)


Liverpool FC - season ticket holder

Lawyer Rankings

London > TMT (technology, media and telecoms) > PATMA: Trade mark attorneys

Haseltine Lake Kempner LLP has seen substantial growth in 2020 thanks to a significant increase in UK trade mark and design work in preparation for Brexit. The practice impresses in advisory and contentious matters alike, consistently appearing among the most active UK and EU trade mark filers as well as among the most active representatives in contentious hearings at the UKIPO. Since the 2019 merger between Kempner & Partners and Haseltine Lake, the firm also has a powerful litigation practice to offer. With its deep bench, the practice is able to assist clients from a wide range of sectors. Particularly busy areas are the chemistry and life sciences, food, hi-tech and engineering sectors, partly thanks to the firm’s neighbouring patent practice whose clients also instruct the firm’s soft IP experts. The duo at the helm of the practice consists of Martin Krause, who splits his time between the Bristol, London and Munich offices, and Jason Dainty, based in Leeds and London. In 2020, solicitor Brian Whitehead was chosen as an Appointed Person at the UKIPO.

Yorkshire and the Humber > TMT (technology, media and telecoms) > Intellectual property

Haseltine Lake Kempner LLP has ‘excellent technical knowledge’ and houses a team of seasoned IP practitioners and patent attorneys, which advises global corporates operating across the chemistry and life sciences sector. The group has a strong contentious practice with Richard Kempner heading up the litigation group, which represents claimants and defendants in patent infringement claims before the High Court. Co-head Jason Dainty leads the trade mark sub-group and is the key name for brand strategy and protection work; he acts for domestic and European clients on trade mark portfolios and licensing arrangements. New partner Brian Whitehead handles copyright and design right issues before the High Court.