Cell Therapy

We are delighted to be working with innovative companies and academic institutions in the exciting field of cell therapy. We leverage our huge depth of experience in the fields of monoclonal antibody technology, cellular biology, immunology and regenerative medicine to build robust, investable patent portfolios for our clients in this space. While applying our wealth of existing knowledge, we are also alive to the fact that new technologies require fresh thinking and an innovative approach to patent protection.

We understand the importance of considering the practicalities of the production and administration of the therapeutic agent(s) at the earliest possible stage, and work with closely with our clients to understand that fine details of the technology and develop an appropriate supporting global patent strategy. For example, in the field of adoptive cellular therapy, strategy for protecting an autologous cell therapy, in which the therapeutic ‘product’ to be administered is a personalised product derived from a patient’s own cells requires a different approach to protecting an allogeneic cell therapy (towards which the field is increasingly moving), which in some aspects is closer to a traditional ‘off-the-shelf’ product.

We have considerable experience in drafting and prosecuting patent applications relating to innovative cell therapies, including for novel CAR/TCR molecules, new platform approaches and innovations relating to the production, expansion and medical use of cell therapies. As earlier generation products continue to mature through clinical trials, we also help our clients to protect innovation throughout the product lifecycle, for example with patent applications related to personalised medicine or new dosage regimes. We also help our clients to navigate the dynamic and increasingly complex patent landscape in the field of cell therapy, strategising with them to minimize the risk presented by patents held by third parties.

Mewburn Ellis is very proud to be working with the entities operating right at the cutting edge of innovation in this exciting field, developing the new platform technologies, designing novel recombinant molecules (CARs, TCRs, etc.) and moving into new disease frontiers (solid cancers, autoimmune disease, viral disease), that will re-shape the therapeutic landscape for the years to come.

Open Pages of Validation Strategies for Pharmaceutical Patents in Europe Report

Validation Strategies for Pharmaceutical Patents in Europe

Special Report

The decision on where to validate a pharmaceutical European patent is a big one. With costs often precluding an “everywhere” approach for small- to medium-sized companies, research institutions and universities, it is necessary to choose from the long list of available countries. The choice typically factors in costs, business interests, likely markets and market size, possible manufacturing and import locations and the regulatory framework in Europe.

This report explores these choices and factors using publicly available data, seeking to answer questions such as:

  • Which countries are most commonly picked by patent holders at the EPO?
  • Is the distribution the same for pharmaceutical patents?
  • Where does “big pharma” choose to validate?
  • What factors might affect the choice of countries?
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Read our blogs

We are a leading force in EPO oppositions

We are a leading force in EPO oppositions

by Alex Galbraith

When it comes to opposing or defending European patents, experience matters. A look at our track record across both offensive and defensive oppositions over the last 12 years highlights not only the ...

UPC Weekly - Three darts all miss – PI based on three patents refused due to validity concerns and insufficient proof of infringement

UPC Weekly - Three darts all miss – PI based on three patents refused due to validity concerns and insufficient proof of infringement

by Eliot Ward

2026 Week 5 For good or bad, it is now clear that inter partes preliminary injunction (PI) proceedings at the UPC end up being mini-trials of the substantive issues. In Guardant Health v. Sophia ...

Round up of recent EPO Board of Appeal decisions relating to antibodies

Round up of recent EPO Board of Appeal decisions relating to antibodies

by Joanna Cripps

We have carried out our annual review of EPO Board of Appeal decisions published up to the end of 2025 where the claimed subject matter relates to antibodies. We have selected those decisions that ...

Most opposed patents of 2025

Most opposed patents of 2025

by Katherine Green

Writing this year’s overview prompted déjà vu and a quick check of 2024’s most opposed patents confirmed that the same innovators feature at the top of the list: patents in the name of Novartis (for ...

UPC Weekly -  Limits on jurisdiction outside the UPC when invalidity looms

UPC Weekly -  Limits on jurisdiction outside the UPC when invalidity looms

by Matthew Naylor

2026 Week 4 The extent of the jurisdiction asserted by the UPC is a hot topic at the moment. On 22 January 2026, the UPC Court of Appeal (CoA) held the oral hearing in the appeal against the ...

UPC Weekly -  Purpose-based interpretation avoids infringement of medical device claim but defendant still on the hook for costs

UPC Weekly -  Purpose-based interpretation avoids infringement of medical device claim but defendant still on the hook for costs

by Matthew Naylor

2026 Week 3 Being sued for patent infringement at the UPC is a full-on experience. The front-loading of the procedure and the urgent time limits mean that far-reaching strategic decisions need to be ...

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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.