Welcome to Sagittarius IP
Sagittarius IP is a full-service intellectual property firm of UK Chartered and European Patent Attorneys, specialising in biotechnology, chemistry and pharmaceutical sectors. With offices in Marlow, Cambridge and London, we support clients across the UK and internationally.
How can we help you?
INVENTION SPOTTING
We capture patentable inventions from our clients’ work for the generation of new IP and its protection. We work with clients to develop a valuable IP estate.
PATENT FILING & PROSECUTION
We undertake drafting, filing and prosecution of patent applications, including international (PCT) applications, representation before the UK and European Patent Offices and coordination of worldwide prosecution through our network of overseas agents with expert knowledge of their local legal systems.
OPPOSITIONS & APPEALS
We represent clients in EPO opposition and appeals. We have extensive experience and an impressive track record of success.
IP PORTFOLIO MANAGEMENT ADVICE
We advise on all aspects of IP portfolio management, including regular evaluation of new and current developments of a client’s technology and the progression of IP prosecution in order to maximise value.
FREEDOM TO OPERATE
We commission freedom to operate searches. We conduct freedom to operate analysis and give clear, commercially orientated advice.
LICENSING & DUE DILIGENCE
We provide advice on IP licensing, assignments and third-party agreements, including around legal and practicality issues. We also manage IP due diligence transactions for product or company acquisition, divestment or investment.
IP EDUCATION
We provide in-house IP training for clients and many of our attorneys are involved in IP education within the patent profession.







Sagittarius IP is proud to have been recognised as one of Europe’s Leading Patent Law Firms by The Financial Times and Statista every year since the awards began in 2019.
Latest Developments
Discover our latest insights, legal updates, and events for your business.
The Unified Patent Court Agreement providing a Unitary Patent (UP) and Unified Patent Court (UPC) in Europe came into force on 1 June 2023. This provides new options for European patent applications upon grant, giving potentially significant cost-savings for validation and renewals. However, it also affects European patents (EPs) granted and validated under the standard EP system, unless they have been opted-out of the UPC’s jurisdiction. Please contact us for further information or assistance.
While the UK is not part of the UP/UPC system following the UK’s departure from the EU, this does not affect our ability to continue to file and prosecute EPs and UPs, or the ability to validate a granted EP in the UK.
Our client portfolio covers the spectrum of small businesses to industry leading FTSE 100 companies, including start-ups, academic research organisations, university spin-outs and venture capital funds. We have built our first-class reputation on the results we achieve for our clients and much of our new business comes through recommendations.
For the 7th year running we have been ranked as one of Europe’s Leading Patent Law Firms by the Financial Times and Statista, maintaining our previous Gold rating in both the Chemistry and Pharmacy and Biotechnology, Food & Healthcare categories. A full list of the rankings can be found by clicking here.
Our People
Our People
Our People
We are a team of highly qualified individuals with a passion for helping our clients achieve maximum value from their intellectual property. Our goal is to maintain exceptionally high standards and to continually exceed our clients’ expectations.