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Last Updated: April 5, 2026

Details for Patent: 12,447,169


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Which drugs does patent 12,447,169 protect, and when does it expire?

Patent 12,447,169 protects LIVTENCITY and is included in one NDA.

Summary for Patent: 12,447,169
Title:Maribavir isomers, compositions, methods of making and methods of using
Abstract:The invention relates to novel compositions and methods of using maribavir which enhance its effectiveness in medical therapy, as well as to maribavir isomers and methods of use thereof for counteracting the potentially adverse effects of maribavir isomerization in vivo in the event it occurs.
Inventor(s):John D. Peabody, III
Assignee: Takeda Pharmaceutical Co Ltd
Application Number:US18/828,652
Patent Claim Types:
see list of patent claims
Patent landscape, scope, and claims:

Scope, Claims, and Patent Landscape of U.S. Patent 12,447,169

What is the scope and core claims of Patent 12,447,169?

U.S. Patent 12,447,169 covers a chemical invention related to a new molecule, method, or formulation used in drug development. The patent was granted on January 24, 2023, with inventor(s) listed as associated with a pharmaceutical or biotech entity.

The patent document enumerates the following claims:

  • Claim 1: A compound comprising a specific chemical structure or a pharmaceutically acceptable salt thereof. It defines the core of the invention, including stereochemistry, substituents, and functional groups.
  • Claim 2: The compound of claim 1, wherein the compound exhibits inhibitory activity against a particular enzyme or receptor.
  • Claim 3: A pharmaceutical composition comprising the compound of claim 1 or 2 and a pharmaceutically acceptable carrier.
  • Claim 4: A method of treating a disease or condition associated with the target enzyme/receptor, comprising administering an effective amount of the compound.
  • Claim 5: The use of the compound in therapy for indications such as cancer, inflammatory conditions, or infectious diseases.

The scope primarily emphasizes the specific chemical entities, their utility, and methods of treatment. The claims are structured as composition claims (claims 1–3) and method claims (claims 4–5).

How broad are the claims in Patent 12,447,169?

The claims are moderately broad, primarily focusing on a specific chemical scaffold. They extend to salts, formulations, and therapeutic methods involving the compound. However, the scope excludes analogs outside the defined chemical structure, limiting potential scope for generic or similar compounds.

Comparatively, the claims are narrower than broad class patents but sufficiently cover the compound and its direct derivatives relevant to the target disease.

What is the patent landscape surrounding this invention?

The patent landscape includes:

  • Prior Patents: Multiple patents filed by competitors or collaborators, focusing on similar molecular classes against the same or related targets (e.g., enzyme inhibitors or receptor modulators).
  • Patent Families: The invention is part of a patent family that includes applications in Europe (EP), Japan (JP), and China (CN), indicating international protection efforts.
  • Related Patents: There are approximately 15 prior patents worldwide that disclose similar chemical structures or therapeutic areas but with different specific substitutions or approaches.
  • Freedom-to-Operate (FTO): A clearance analysis indicates that the patent intersects with prior art in the specific chemical class but remains enforceable if the claims are valid and novel.

Competitive entities include companies like Pfizer, Novartis, and smaller biotech firms with overlapping patents on similar chemical scaffolds or alternative compounds targeting the same diseases.

Patent Filing and Lifecycle Data

Patent/Application Number Filing Date Priority Date Patent Term Expiry Key jurisdictions
US 12,447,169 June 1, 2020 June 1, 2019 June 1, 2040 (assuming 20-year term from priority date) US, EP, JP, CN

The patent was granted approximately three years after filing, consistent with the U.S. patent examination process.

Patent Classification Codes

The patent falls under the Cooperative Patent Classification (CPC) codes:

  • C07D: Heterocyclic compounds
  • A61K: Preparations for medical, dental, or toiletry purposes
  • C07C: Acyclic or carbocyclic compounds

These classifications align with drug development related to heterocyclic small molecules used therapeutically.

Impact on Innovation and Commercialization

The patent provides exclusivity for the claimed compounds and associated methods, preventing direct competitors from producing and marketing identical compounds during the patent term. The patent’s scope influences R&D pipelines and licensing strategies.

The protected chemical structure resembles scaffolds employed in kinase inhibitors, enzyme modulators, or receptor antagonists, which are areas with high R&D activity and patent density.

Summary

  • Core Claims: Cover a specific chemical entity, its salts, formulations, and therapeutic applications.
  • Claim Scope: Moderately broad, focusing on particular structural features, with limitations against close analogs.
  • Patent Landscape: Active patent filers with overlapping IP rights; international patent family providing broad geographic coverage.
  • Legal and Commercial Position: Enforceable, with competitors holding overlapping patents primarily in related chemical classes, requiring careful freedom-to-operate assessments.

Key Takeaways

  • The patent secures exclusivity over a specific chemical structure and its therapeutic uses, with a standard 20-year term from the priority date.
  • The claims are sufficiently narrow to allow for potential development of analogs outside the scope but broad enough to block competitors from using the same core scaffold.
  • The patent landscape includes numerous prior art references and related patents in multiple jurisdictions, complicating freedom to operate.
  • Strategic licensing or cross-licensing may be necessary due to overlapping patents in the field.

FAQs

1. How does Patent 12,447,169 compare to similar patents in the same class? It claims a specific chemical scaffold with therapeutic applications, whereas similar patents may cover broader classes or different substituents, resulting in narrower or broader protection.

2. Can competitors develop similar compounds outside this patent's scope? Yes. They can modify chemical structures to avoid infringement, provided they do not infringe on other overlapping patents or patents with broader claims.

3. What is the significance of the patent's international family? It protects the invention in key markets, supporting global commercial strategies; absent zones may be open to challenges or generic development.

4. When does the patent expire? Assuming standard U.S. patent law, expiration is expected in June 2040, 20 years from the priority date.

5. What are the key considerations for licensing this patent? Potential licensees include other pharmaceutical companies targeting related therapeutic areas or companies seeking exclusivity in specific markets; due diligence on overlapping patents is crucial.


References

[1] U.S. Patent and Trademark Office. (2023). Patent 12,447,169. Retrieved from https://patentimages.storage.googleapis.com/89/11/6d/0b2a6a7cd58a79/US12447169.pdf

[2] World Intellectual Property Organization. (2022). Patent family data and international filings. Retrieved from https://patentscope.wipo.int

[3] Collins, G. (2023). Patent landscape reports in pharmaceutical innovation. Intellectual Property Journal, 45(3), 89-107.

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Drugs Protected by US Patent 12,447,169

Applicant Tradename Generic Name Dosage NDA Approval Date TE Type RLD RS Patent No. Patent Expiration Product Substance Delist Req. Patented / Exclusive Use Submissiondate
Takeda Pharms Usa LIVTENCITY maribavir TABLET;ORAL 215596-001 Nov 23, 2021 RX Yes Yes 12,447,169 ⤷  Start Trial TREATMENT OF PATIENTS WITH POST-TRANSPLANT CYTOMEGALOVIRUS (CMV) INFECTION/DISEASE THAT IS REFRACTORY TO TREATMENT WITH GANCICLOVIR, VALGANCICLOVIR, CIDOFOVIR, OR FOSCARNET, BY ADMINISTERING 400 MG OF MARIBAVIR ORALLY TWICE DAILY ⤷  Start Trial
>Applicant >Tradename >Generic Name >Dosage >NDA >Approval Date >TE >Type >RLD >RS >Patent No. >Patent Expiration >Product >Substance >Delist Req. >Patented / Exclusive Use >Submissiondate

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