Thomson Reuters names eight Keystone Law partners in its Stand-out Lawyers Guide 2026
Andrea James, Andrew Darwin & Anna McKibbin
Marcus is an intellectual property lawyer of 30 years’ experience with a particular focus in the fields of UK, EU and international trade mark prosecution, trade mark portfolio management, branding, and infringement matters. He also advises on internet domain name, industrial design, copyright, defamation, and social media platform content issues.
Clients include well-known brands in the pharmaceutical, sports franchising/merchandising, social media, and financial services sectors.
Marcus advises on electoral law issues including campaign funding, transparency in online engagement, foreign interference investigations, defamation, and compliance with UK election legislation, supporting political organisations, social media platforms, and individuals.
Experience
Marcus advises on defamation, greenwashing, and reputation risks for individuals, corporates, and online platforms, including managing harmful reviews, misleading advertising, and unlawful interference with client commercial relationships.
Experience
Marcus advises on trade mark prosecution, infringement, and disputes, copyright, designs, and domain names, representing global brands and SMEs in litigation, oppositions, and portfolio management across pharmaceuticals, sports, retail, social media, and luxury sectors.
Experience
Marcus advises life sciences clients on IP matters including trade marks, branding, and infringement through to UK and international trade mark prosecution. He also advises on domain names, industrial design, copyright, defamation, advertising standards matters, and social media issues.
Experience
Marcus advises sports clients on IP matters including trade marks, branding and infringement through to UK and international trade mark prosecution. He also advises on domain names, industrial design, copyright, defamation, advertising standards, and social media issues.
Experience
Marcus advises media clients on IP matters including trade marks, branding and infringement through to UK and international trade mark prosecution. He also advises on domain names, industrial design, copyright, defamation, advertising standards, and social media issues.
Experience
Marcus advises financial services clients on IP matters including trade marks, branding and infringement through to UK and international prosecution. He also advises on domain names, industrial design, copyright, defamation, and social media issues.
Experience
Please note: The experience list above may include examples of work completed prior to joining Keystone Law.
Member of INTA (International Trademark Association)
Member of PTMG (the Pharmaceutical Trade Mark Group)
Former sessional lecturer on trade marks at Queen Mary College, University of London
Marcus qualified as a solicitor in 1995. Prior to joining Keystone Law in 2024, he worked at the following: