Firebrick Pharma Locks in Canadian Patent on Nasodine as COVID Prevention Tool to 2040

By Josua Ferreira -

Firebrick Pharma’s Nasodine secures second Canadian patent, covering COVID-19 viral shedding

Firebrick Pharma (ASX: FRE) has had a second patent for its Nasodine product accepted in Canada, this time covering the use of Nasodine Nasal Spray and other intranasal preparations in reducing viral load and shedding associated with SARS-CoV-2. The new protection is separate and distinct from the company’s first Canadian patent, which related to use in the Common Cold. The patent expires in 2040.

What the new patent covers and why it matters

The accepted patent, titled “Prevention of infection by highly pathogenic viruses using topical application of povidone-iodine on mucous membranes,” protects Nasodine Nasal Spray and other intranasal povidone-iodine (PVP-I) preparations as a method of reducing SARS-CoV-2 viral load in the nasal passage.

Granted claims also extend to pre-exposure prophylaxis, meaning preventative use prior to potential exposure to SARS-CoV-2. This broadens the product’s commercial applicability beyond treatment into active prevention, a meaningful distinction for both regulatory positioning and market reach.

Firebrick’s growing international patent estate

The same patent has been accepted and/or granted across a range of jurisdictions, building what the company describes as a strengthening intellectual property position to support its commercialisation strategy:

  • Canada
  • United States
  • Europe
  • Australia
  • Multiple other countries

Each additional jurisdiction reinforces Firebrick’s ability to protect its Nasodine franchise as it pursues market expansion across regions with differing regulatory and competitive environments.

The announcement was authorised for release by Dr Peter Molloy, Executive Chairman of Firebrick Pharma Limited. No additional direct commentary from Dr Molloy was included in the announcement beyond the authorisation.

Understanding PVP-I and nasal spray as an antiviral tool

Povidone-iodine (PVP-I) is an antiseptic compound with a long-established history in medical and clinical settings. When formulated for nasal application, it acts on the mucous membranes lining the nasal passage, the primary entry point for many respiratory viruses including SARS-CoV-2.

Viral shedding refers to the process by which an infected person releases virus particles from their body, in this case through the nasal passage, making transmission to others more likely. Reducing viral load at this site may help limit both the severity of infection in the individual and the potential spread to those around them.

Pre-exposure prophylaxis refers to the use of a treatment or product before potential exposure to a pathogen, rather than after infection has occurred. In the context of this patent, it means Nasodine Nasal Spray may be used as a preventative measure before likely contact with SARS-CoV-2. For investors, this significantly expands the addressable use case beyond treatment into an ongoing preventative category, which typically supports broader and more frequent product adoption.

Nasodine’s commercial footprint and the road ahead

Firebrick’s Nasodine Nasal Spray is already present across multiple markets, with further expansion underway. The company’s current and pipeline market presence includes:

  1. United States
  2. Singapore
  3. Fiji & South Pacific
  4. Indonesia (recently approved for marketing)
  5. Philippines (approval being pursued)
  6. Other markets (in pursuit)

Nasodine Throat Spray is available as a follow-on product in Singapore and Fiji, marking the beginning of a broader product range. Firebrick has announced plans for up to four products in the Nasodine range and expansion of sales to up to 10 markets over three years.

The second Canadian patent, covering SARS-CoV-2 viral shedding and pre-exposure prophylaxis through to 2040, adds another layer of intellectual property protection to underpin this commercial runway as the company pursues regulatory approvals and distribution partnerships across new territories.

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Frequently Asked Questions

What is the Firebrick Pharma Nasodine Canada patent for?

The second Canadian patent for Nasodine covers the use of Nasodine Nasal Spray and other intranasal povidone-iodine preparations to reduce SARS-CoV-2 viral load and shedding in the nasal passage, including pre-exposure prophylaxis, and is valid until 2040.

How many countries has Firebrick Pharma's Nasodine SARS-CoV-2 patent been granted in?

The same patent has been accepted and/or granted across Canada, the United States, Europe, Australia, and multiple other countries, building a broad international intellectual property estate for the company.

What is pre-exposure prophylaxis and why does it matter for Nasodine?

Pre-exposure prophylaxis means using a product before potential exposure to a pathogen rather than after infection, and its inclusion in the Nasodine patent broadens the product's use case from treatment into active prevention, supporting wider and more frequent adoption.

What markets is Nasodine currently sold in?

Nasodine Nasal Spray is commercially active in the United States, Singapore, Fiji, the South Pacific, and Indonesia, with regulatory approval being pursued in the Philippines and additional markets, as part of Firebrick's plan to reach up to 10 markets over three years.

How is Firebrick Pharma's second Canadian patent different from its first?

The first Canadian patent related to Nasodine's use in the Common Cold, while the second, newly accepted patent is a separate and distinct protection covering use in reducing SARS-CoV-2 viral shedding and pre-exposure prophylaxis, expiring in 2040.

Josua Ferreira
By Josua Ferreira
Partnership Director
Josua Ferreira holds a Bachelor of Commerce in Marketing and Advertising and brings a background in publication, business development, and ASX market storytelling. He has worked with listed companies across the resource sector and broader market, combining sharp commercial instincts with a genuine commitment to keeping investors informed.
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