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Patent oppositions and appeals

At Dolleymores, we are ready to work with you on all and any European Patent Office (EPO) oppositions and appeals. We regularly challenge and defend the validity of European patents for multinational companies. With unrivalled advocacy skills, strong technical expertise, and extensive experience in validity disputes, we are able to present persuasive arguments - and secure impressive results - in patent challenges.

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Advocacy built around you 

At Dolleymores we have a long history of representing our clients before the European Patent Office (EPO) in opposition and appeal proceedings. We deliver strategic, persuasive advocacy to represent you with:

  • Proven expertise: We have a long history of successfully challenging and defending the validity of European patents for multinational clients.
  • Skilled advocacy: We leverage our deep technical knowledge and exceptional advocacy skills to secure favourable outcomes.
  • Strong track record: We have an impressive record of maintaining patent rights against third-party challenges.

Trust our team to act for you in complex EPO proceedings.

Get in touch with our team

IP Guide

Patent FAQs

Find answers to some of our most frequently asked questions below. If your question isn’t covered, please contact our team using the enquiry form below.

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TRUSTED BY 1,300+ CLIENTS WORLDWIDE FOR OVER 50 YEARS

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Why choose Dolleymores

Dolleymores is a firm of leading IP specialists ready to assist with a diverse range of IP matters, across many sectors. Working across the UK and internationally, our IP attorneys are equipped to help you protect your innovations, time and creativity now and for the future.

Contact us

Please fill in this form with as much detail as possible, you will then be contacted by a member of our team. Alternatively, you can call us. Tell us about you and we’ll be in touch.

Chat with us

Reach out to us at [email protected]

Our office

9 Rickmansworth Road,
Watford,
Hertfordshire,
WD18 0JU
United Kingdom

Office closed dates

Our offices will be closed in 2026 on the following dates: 
3rd & 6th April, 4th & 25th May, 31st August, 25th & 28th December.

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