Marks & Clerk LLP
Marks & Clerk is a global intellectual property firm providing patent, trade mark, legal and IP litigation expertise to businesses.
Last updated September 25, 2026
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Overview
Marks & Clerk LLP is a United Kingdom-based intellectual property firm. According to its official About Us page, it opened its first office in the UK in 1887. The firm describes itself as a leading global IP practice that works with businesses of different sizes and around the world, shaping its services to clients’ needs and helping them protect, enforce and maximise the value of their intellectual property. Its professional team includes patent attorneys, trade mark attorneys, commercial lawyers and IP litigators. The firm’s services include securing and protecting patent and trade mark rights, enforcing those rights, advising on commercialisation and addressing legal and commercial challenges involving intellectual property and brands. Its brand and trade mark practice offers advice intended to align protection with a client’s business plans, target markets and budget. The firm says it has trade mark attorneys in the UK and mainland Europe qualified to act before the UK Intellectual Property Office, the European Union Intellectual Property Office and courts. It also works with attorney firms in markets beyond its own office network. The homepage describes a network of 15 offices across three continents and around 300 practitioners. The firm presents its work as international in reach, while noting that its own offices and external attorney-firm relationships help it serve clients in different markets. Its stated client base spans businesses of varied sizes and sectors. The official site also identifies cleantech as a focus area for its client work and publishes resources and commentary on intellectual property topics and innovation. Marks & Clerk’s corporate responsibility priorities include diversity and equality in the workplace, reducing environmental impact, and supporting charities and communities. The firm remains active, providing intellectual property services and publishing insights and firm news through its website. The supplied information does not identify its headquarters, founders, named executives, or a parent company.
History
Marks & Clerk traces its history to the opening of its first UK office in 1887. The supplied official About Us page identifies that date as the beginning of the firm’s presence, but does not name its founders or give details of its earliest clients or practice structure. The firm states that, by 1911, the British press had described it as “recognised as the greatest firm of its kind in the world,” an indication of its early reputation in its field. Over time, Marks & Clerk developed into an international intellectual property practice. Its present-day account describes a firm serving businesses of different sizes worldwide, with a team spanning patent attorneys, trade mark attorneys, commercial lawyers and IP litigators. The homepage reports 15 offices across three continents and around 300 practitioners. The supplied materials do not provide dates for the establishment of particular offices or a detailed chronology of international expansion. The firm’s work covers the protection, enforcement and commercial value of intellectual property. Its trade mark practice describes advising on rights and brand strategies across markets, and says its UK and mainland European trade mark attorneys are qualified to act before the UKIPO, EUIPO and courts. Marks & Clerk also describes working with attorney firms in markets where clients need support beyond its own offices. Its website identifies cleantech among the sectors it supports and provides resources on topics including the Unitary Patent and Unified Patent Court. The firm also sets out corporate responsibility commitments relating to diversity and equality, environmental practices and community support. It says its environmental approach addresses office accommodation, working practices, energy use, travel and recycling. The supplied evidence does not identify changes in ownership, named leaders, mergers, listings or other dated corporate restructuring. The firm is presented as an active international IP practice.
- 1911
Recognised in the British press
- 1887
First UK office established
Products and positioning
A global intellectual property firm combining legal, technical and commercial expertise, with services tailored to clients’ needs, markets and budgets.
Brands & Trade Marks IP Services
Advice on securing, protecting and enforcing trade mark rights and addressing legal and commercial branding challenges.
Patent and IP services
The firm’s stated practice includes patent attorneys, commercial lawyers and IP litigators who help clients protect, enforce and maximise the value of intellectual property.
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