Press Releases March 26, 2026

Agomab Receives U.S. Patent for AGMB-447, its Inhaled Lung-restricted Small Molecule Inhibitor of ALK5 in Development for the Treatment of Idiopathic Pulmonary Fibrosis

Agomab secures U.S. patent for its inhaled ALK5 inhibitor AGMB-447 targeting IPF

By Priya Menon AGMB
Agomab Receives U.S. Patent for AGMB-447, its Inhaled Lung-restricted Small Molecule Inhibitor of ALK5 in Development for the Treatment of Idiopathic Pulmonary Fibrosis
AGMB

Agomab Therapeutics announced that the USPTO granted a composition of matter patent for AGMB-447, its inhaled lung-restricted ALK5 inhibitor in development for idiopathic pulmonary fibrosis (IPF). This patent protection extends in the U.S. through at least 2041, supporting the company's clinical-stage pipeline targeting fibrosis. AGMB-447 is currently in a Phase 1b study with positive early data, with further patient cohort results anticipated later in 2026.

Key Points

  • USPTO granted U.S. patent for AGMB-447 composition of matter, ensuring IP protection through 2041.
  • AGMB-447 is an inhaled ALK5 inhibitor designed to treat idiopathic pulmonary fibrosis by targeting the fibrosis pathway locally in the lungs.
  • Upcoming phase 1b patient cohort results this year will be a critical readout for AGMB-447’s therapeutic potential.
  • The biotechnology and pharmaceutical sectors are impacted, specifically companies focused on fibro-inflammatory diseases and orphan lung disorders like IPF.

Antwerp, Belgium, March 26, 2026 – Agomab Therapeutics NV (Nasdaq: AGMB) (“’Agomab’”), a clinical-stage biopharmaceutical company focused on fibrosis, today announced that the United States Patent and Trademark Office (USPTO) has granted U.S. Patent No. 12,577,230, covering the composition of matter of AGMB-447, to Agomab. AGMB-447 is the company’s investigational inhaled lung-restricted small molecule inhibitor of ALK5 (or TGFβR1), currently in a Phase 1b study for the treatment of Idiopathic Pulmonary Fibrosis (IPF). This patent provides intellectual property (IP) protection for AGMB-447 in the U.S. through at least 2041, excluding any potential patent term extensions.

“The issuance of this patent is a significant milestone that solidifies the foundational IP for AGMB-447 in the U.S.,” commented Tim Knotnerus, Chief Executive Officer at Agomab. “Building a global patent portfolio for AGMB-447 is an important step in our mission to address the high unmet medical need for people living with IPF. Following the positive healthy subject data for AGMB-447, we look forward to the results of the IPF patient cohort of the Phase 1b study later this year.”

AGMB-447 is an investigational drug and not approved by any regulatory authority. Its efficacy and safety have not been established. 

About AGMB-447
AGMB-447 is an inhaled lung-restricted small molecule inhibitor of ALK5 (or TGFβR1) intended for the treatment of Idiopathic Pulmonary Fibrosis (IPF). TGFβ is the master regulator of fibrosis, which is the key process driving IPF disease progression. AGMB-447 is specifically designed to inhibit ALK5 in the lung while avoiding clinically relevant systemic exposure through local administration via inhalation and rapid hydrolyzation in plasma. Through AGMB-447, Agomab aims to offer a potentially safe and effective novel anti-fibrotic therapeutic option to IPF patients.

About Agomab
Agomab is a clinical-stage biopharmaceutical company focused on developing novel disease-modifying therapies for fibro-inflammatory diseases with high unmet medical need. Agomab’s product candidates are designed to target established potent pathways and utilize organ-restricted approaches, with the aim of increasing efficacy while minimizing safety liabilities. Fostering a culture of excellence, Agomab’s mission is to pioneer therapeutics that aim to resolve fibro-inflammation and restore organ function to enable people with these disorders to live fuller and healthier lives.

Cautionary Note Regarding Forward-Looking Statements
This press release includes certain disclosures that contain “forward-looking statements,” including, without limitation, statements regarding Agomab’s focus on the discovery and development of its pipeline of novel product candidates for chronic fibrotic disorders and the validity and duration of IP protection for AGMB-447 in the U.S., as well as statements regarding future data readouts. Forward-looking statements are based on Agomab’s current expectations and are subject to inherent uncertainties, risks and assumptions that are difficult to predict. Factors that could cause actual results to differ include, but are not limited to, risks and uncertainties related to the risks inherent in biopharmaceutical product development and the risk that we may not be able to successfully maintain, enforce and/or defend our IP for AGMB-447. These and other risks and uncertainties are described more fully in the section titled “Risk Factors” section of the registration statement filed with the Securities and Exchange Commission. Forward-looking statements contained in this announcement are made as of this date, and Agomab undertakes no duty to update such information except as required under applicable law. Readers should not rely upon the information in this announcement as current or accurate after its publication date.

Contacts
Investors
Sofie Van Gijsel
VP of Investor Relations
E-Mail: [email protected]
Phone: +1 781 296 1143
        
Media
Gretchen Schweitzer
Trophic Communications
E-Mail: [email protected]
Phone: +49 172 861 8540

Attachment

  • 20260326_AGMB-447 US patent_FINAL

Risks

  • AGMB-447 is still investigational with efficacy and safety not yet established; clinical development failure risk remains.
  • The ability to maintain, enforce, and defend IP rights could be challenged, potentially affecting exclusivity.
  • General risks inherent in biopharmaceutical development, including regulatory approvals, trial outcomes, and market acceptance uncertainties.

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