6 August 2026

Fusion Antibodies plc

("Fusion" or the "Company")

Notice of acceptance of patent in Australia

Fusion Antibodies plc (AIM: FAB), specialists in pre-clinical antibody discovery, engineering and supply for both therapeutic drug and diagnostic applications, announces that IP Australia has issued a notice of acceptance in respect of the Company's Australian patent application no. 2019365135 (the "Patent Application").

The Patent Application entitled "Antibody Library and Method", covers two families of antibodies, and the methods for designing such antibody libraries. The patent, once granted, is expected to be complementary to Fusion's offering to provide "Opti" designed antibody libraries for a range of applications including: Antibody Discovery; Affinity Maturation; and Sequence Optimisation.

The Company continues to progress additional patent applications in respect of the OptiMAL® Library in several other territories worldwide including Europe and China.

Receipt of a notice of acceptance indicates that the claims in the Patent Application are patentable and does not in itself represent a grant of patent rights. Fusion anticipates that the patent will be granted in due course, following completion of certain administrative requirements, including payment of the applicable fees, and the successful completion of a three-month gazetting period.

Enquiries: 

Investor Hub                                                                                                      

We encourage all investors to share questions on this announcement via our investor hub https://investorhub.fusionantibodies.com/link/rJaa9e

About Fusion Antibodies plc

Fusion is a Belfast based contract research organisation ("CRO") providing a range of antibody engineering services for the development of antibodies for both therapeutic drug and diagnostic applications.

The Company's ordinary shares were admitted to trading on AIM on 18 December 2017. Fusion provides a broad range of services in antibody generation, development, production, characterisation and optimisation. These services include antigen expression, antibody production, purification and sequencing, antibody humanisation using Fusion's proprietary CDRx ^TM platform and the production of antibody generating stable cell lines to provide material for use in clinical trials. Since 2012, the Company has successfully sequenced and/or expressed over 750 antibodies and successfully completed over 250 humanisation projects and has an international, blue-chip client base, which has included eight of the top 10 global pharmaceutical companies by revenue.

The Company was established in 2001 as a spin out from Queen's University Belfast. The Company's mission is to enable pharmaceutical and diagnostic companies to develop innovative products in a timely and cost-effective manner for the benefit of the global healthcare industry. Fusion Antibodies provides a broad range of services in antibody generation, development, production, characterisation and optimisation.

Fusion Antibodies growth strategy is based on combining the latest technological advances with cutting edge science to deliver new platforms that will enable Pharma and Biotech companies get to the clinic faster, with the optimal drug candidate and ultimately speed up the drug development process.