Battery technologies

Battery technology lies at the heart of the energy transition, powering everything from electric vehicles to renewable energy storage. But as the sector evolves, so do its challenges. At HGF, we support innovators in navigating a complex and fast-moving IP landscape with tailored, commercially focused strategies.

With technologies ranging from solid-state and sodium-ion batteries to silicon anodes and cobalt-free chemistries, the battery sector is seeing high volumes of patent filings and intense global competition. Drafting patent applications that avoid prior art, and securing meaningful protection requires not only technical expertise but also knowledge of the field’s evolving trends and legal frameworks.

We also advise on freedom-to-operate analyses, which are essential to product launch, yet increasingly complex due to dense patent portfolios and limited public disclosure of manufacturing methods. Whether you’re scaling up solid-state battery production or exploring next-generation chemistries, we help clients protect innovation, manage risk, and lead with confidence in this high-stakes sector.

Latest updates

Excipient or active ingredient? Look to the marketing authorisation…

In his recently issued (non-binding) Opinion in the Halozyme referral to the Court of Justice of the EU (C-456/24), the Advocate General has delivered a decisive “no” to the question …

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Six Sectors. Six Golds. Financial Times: Europe’s Leading Patent Law Firms 2026

HGF has once again been recognised with ‘Gold’ rankings across all six sectors in the Financial Times Special Report – Europe’s Leading Patent Law Firms 2026. We are one of …

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Pro = Active? CJEU asked to decide

In a new referral to the EU’s Court of Justice (C-794/25), the CJEU has been asked to rule on the question whether an approved pro-drug of a previously approved active …

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Santen Revisited – CJEU asked to think again on “first authorisation” for SPCs

A new referral to the Court of Justice of the EU (C-15/26) will once again consider what is meant by the “first marketing authorisation” requirement of Article 3(d) of the …

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Case Law for Non-Reproducible Products as Prior Art

Does a non-reproducible commercially available product form part of the state of the art for a European patent application? This question was answered as “yes” in G 1/23 by the …

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Fuelling IP: The “Charge” of the Century: How Battery Innovation Became the New Tech Race

As the world is reminded of the 1960s “space race” with the launch of Artemis II for humanity’s historic transit around the moon, it feels fitting that the European Patent …

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PRESS RELEASE - Garreth Duncan joins HGF as a Partner in the London office

HGF is pleased to announce the appointment of Garreth Duncan who will be joining the firm as a Partner on 1st April 2026. Garreth joins our Chemistry and Pharmaceutical Group …

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Fuelling IP: UK Sustainable Aviation Fuel – Direction of Travel

Last month, the UK government released their third provisional report on sustainable aviation fuel (SAF) use covering all of 2025. It is clear that momentum for SAF is building – …

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Let's talk

If you would like to discuss how HGF could help you, contact one of our battery technologies specialists.