Protein

Therapeutics

We have extensive experience drafting and prosecuting patent applications in the field of engineered peptide therapeutics, gaining insight into the different challenges that working in this area raises as compared to patenting antibody or polypeptide therapeutics. Our experience includes work on portfolios covering approved and candidate peptide therapeutics, such as Lixisenatide, Danegaptide, Glepaglutide and Dasiglucagon.

Many of these challenges revolve around the evolution of an initial wild-type peptide to become a candidate peptide therapeutic, modifying or truncating the wild-type peptide and often incorporating other types of derivatisation and cyclisation to optimise the properties of the therapeutic molecule. This work requires an understanding of underlying biochemistry and chemistry of the molecules.

In addition, the team at Mewburn Ellis working in this area have extensive experience of freedom-to-operate analysis, EPO opposition and appeals and other strategies to manage the competitive landscape, while maximising the protection of the products of the applicants we represent.

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Opposition Trends in the Life Sciences Sector

Special Report

In spring 2019, Mewburn Ellis undertook 350 hours of research, analysing more than 5,000 opposition cases filed at the European Patent Office over the last ten years, studying the timelines for hundreds of life sciences oppositions both before and after the EPO’s opposition streamlining initiative.

View the 2020 addendum for this report, based on information as it appeared on the EPO Register on 10 January 2021 and from bulk data sets extracted on this date.

Download the Report

Read our Blogs

UPC Weekly - Damages and added matter at the UPC

UPC Weekly - Damages and added matter at the UPC

by Matthew Naylor

2025 Week 3 The UPC has most definitely kicked into gear. Each week there are increasing numbers of decisions, orders and news items to review. Over the end of year period, there have been many ...

The power of Bioprocess Engineering

The power of Bioprocess Engineering

by Anja Koller

Microorganisms wield the power to revolutionise industries and address global challenges. These "little factories" are central to the production of a diverse array of high-value products across ...

Quantum and the law - a new special report

Quantum and the law - a new special report

by Joanna Smith

We are delighted to release our latest report Quantum and the law. View the report here.

UPC Weekly - Alexion v Samsung & Amgen – Patentee’s attempted U-turn on claim interpretation foiled by UPC Court of Appeal

UPC Weekly - Alexion v Samsung & Amgen – Patentee’s attempted U-turn on claim interpretation foiled by UPC Court of Appeal

by Eliot Ward

2025 Week 2 Tailoring one’s claim interpretation for the jurisdiction at hand can be a canny way of maximizing your patent’s footprint. You can argue a narrow interpretation during grant and validity ...

Veganuary: can you reference the animal counterpart in the branding of your vegan product?

Veganuary: can you reference the animal counterpart in the branding of your vegan product?

by Rebecca Anderson-Smith

From This Isn't Bacon Plant-Based Rashers, to Violife Smoky Cheddar Flavour Slices, a quick glance around the supermarket will make it very clear that many producers of substitutes for animal ...

UPC Weekly - UPC transparency by numbers

UPC Weekly - UPC transparency by numbers

by Matthew Naylor

2025 Week 1 How easy is it to get hold of documents from UPC cases? The easy answer “it depends” is not very helpful. This week we weigh up all of the cases to date where public access to the UPC ...

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Mewburn Ellis

FORWARD MAGAZINE

Mewburn Ellis Forward is a biannual publication that celebrates the best of innovation and exploration. Through its pages we hope to inform and entertain, but also to encourage discussion about the most compelling developments taking place in the scientific and entrepreneurial world. Along the way, we’ll engage with the IP challenges that international organisations face every day.