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Dr
Thomas
Lonsdale

Senior Patent Attorney

London Office Munich Office

Chemistry

Telephone. +44 (0)207 776 5100
Email. tlonsdale@hgf.com
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Experience

Tom is a Senior Patent Attorney with expertise in drafting, prosecution, oppositions and FTO analysis. Tom works for a broad range of clients in the chemistry, biochemistry, pharmaceuticals, and materials spaces.

Tom has a passion for sustainable technologies and the role technology will play in a more sustainable world. He has a strong focus on green technologies, and is passionate about supporting SMEs working in the sustainability/circular economy space. He also has a keen interest in pharmaceuticals and working at the interface between chemistry and the life sciences.

Specialisms

Industries

Services

Qualifications

Patent Attorney

Chartered (UK)

Zugelassener Vertreter vor dem Europäischen Patentamt

MCHEM

First Class Masters' Degree in Chemistry (University of Oxford)

PHD

PhD in Inorganic Chemistry (University of Oxford)

Publications

T1465/23 – No Narrowing by Description—EPO Board Terminates Inventive Step Analysis for Arbitrary Modifications Citing G1/24 and G1/19

View publication online

Wrestling with G1/24 – How should the claims be interpreted in view of the description?

View publication online

Conferences: 2024

20-09-2024

The Heat Festival of Innovation

Attended

Event details

CSR

Tom has volunteered on a number of CREST taster days designed to peak school student’s interest in STEM and the wide variety of roles available to STEM graduates.

Related News

PRESS RELEASE – HGF strengthens European presence with three new Partners in France and Germany

HGF is pleased to announce the arrival of three new partners, further strengthening its European presence. Two partners will be joining the firm’s fast-growing French practice, and one will join …

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G1/23: The Enlarged Board of Appeal shift EPO practice towards an “on-sale” bar.

Last week, the EPO’s Enlarged Board of Appeal (EBA) issued its Decision that both a product put on the market before the date of filing of a European patent application, …

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The EPO Board of Appeal comments on the scope of the morality exclusion from patentability

The recent decision, T1553/22 of the Board of Appeal required the Board to consider the scope of the exclusions from patentability under Article 53(a) EPC. The invention in this case …

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Event - 11th November 2025

OIS Investor Forum - Jeffries

HGF is proud to be sponsoring the OIS Investor Forum on 18th November. One of the premier gatherings for leaders, innovators, and investors across the healthcare industry. The forum covers …

Event details

From Stripes to Supermarkets: The Court of Appeal Reaffirms the Need for Precision in Trade Mark Law

On 23 October 2025, Lord Justice Arnold delivered two landmark Court of Appeal decisions addressing trade mark registrability: Thom Browne Inc & Anor v adidas AG [2025] EWCA Civ 1340 …

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Protecting Digital Health innovation in the AI revolution

As artificial intelligence (AI) continues to transform healthcare, from diagnostic imaging and drug discovery to wearable devices and clinical decision support, questions around how to protect these advancements have become …

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Doubling Up on Added Matter at the UPC

Following the UPC Court of Appeal (CoA) decision in Abbott v Sibio (APL_39664/2024, 14 February 2025) we now have a second CoA decision on added matter in expert Klein v …

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