Marks & Clerk
Legal Influencer
Q4 | 2025
Marks & Clerk is the largest firm of intellectual property advisers in the UK and is recognised as one of the world’s leading IP firms. Its patent and trade mark attorneys offer a full range of intellectual property services – covering patents, trade marks, designs and copyright – for clients ranging from SMEs and spinouts to universities and multinationals.
Founded in 1887, Marks & Clerk has long been recognised as one of the leading patent and trademark attorney firms across the globe, with eight offices in the UK and a further seven worldwide. We pride ourselves on providing specialist IP services to clients of all sizes, from individuals to multi-national companies. Our unique offering allows our clients to enjoy a comprehensive service, always tailored to their specific needs.
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Offices
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Toronto ON (100 Simcoe Street)
100 Simcoe Street, Suite 200, Toronto ON M5H 3G2, Canada
Phone +1 647 466 3585
Fax +1 416 595 1163
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Ottawa ON
180 Kent Street, Suite 1900, Ottawa ON K1P 0B6, Canada
Phone +1 613 236 9561
Fax +1 613 230 8821
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Toronto
100 Simcoe street, Toronto, Canada
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Toronto ON (33 Yonge Street)
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Toronto ON (100 Simcoe Street)
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Toronto ON (40 Temperance Street) Cassels Brock & Blackwell LLP
40 Temperance Street, Toronto ON M5H 0B4, Canada
