On January 28, 2025 Sonnet BioTherapeutics Holdings, Inc. (the "Company" or "Sonnet") (NASDAQ: SONN), a clinical-stage company developing targeted immunotherapeutic drugs, reported that the European Patent Office (EPO) has granted Patent No. EP3583125 B1, entitled "Albumin Binding Domain Fusion Proteins," which covers Sonnet’s Fully Human Albumin Binding (FHAB) technology and includes therapeutic fusion proteins that utilize FHAB for tumor targeting and retention and provide extended pharmacokinetics (PK) (Press release, Sonnet BioTherapeutics, JAN 28, 2025, View Source [SID1234649908]). The EU patent carries a term effective until February 20, 2038. Additionally, the Company announced the release of a "What This Means" segment to discuss the EU patent and its global IP estate, which is now available here.
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"The granting of this EU patent represents another milestone that provides expanded global protection along with building our intellectual capital and differentiation from any existing or emerging competitive technologies that may leverage the beneficial characteristics of binding to human serum albumin," commented Pankaj Mohan, Ph.D., Founder and CEO of Sonnet. "Further, this European patent issuance expands the global IP protection for our product pipeline beyond previous patents issued in China, Japan, Russia and New Zealand, which we believe provides further validation for our FHAB platform."
Sonnet’s FHAB platform consists of a single, fully human construct of a FHAB antibody fragment that has high affinity to bind to human albumin. The platform provides an off-the-shelf lock and load opportunity to rapidly develop numerous therapeutic biologics.
John Cini, Ph.D., Co-Founder and CSO of Sonnet commented, "The FHAB platform technology provides each of Sonnet’s pipeline drug candidates with either a mono- or bi-functional mechanism of action, thus allowing for the potential of biological synergy between cytokines. Preclinical comparative in vivo studies with wild type cytokines have shown that FHAB-derived drug candidates have reproducibly extended pharmacokinetics, enhanced payload delivery to the tumor and improved efficacy."