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Last Updated: March 26, 2026

Details for Patent: 11,458,103


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Which drugs does patent 11,458,103 protect, and when does it expire?

Patent 11,458,103 protects FERRIPROX and is included in one NDA.

This patent has thirty-six patent family members in twenty-nine countries.

Summary for Patent: 11,458,103
Title:Delayed release deferiprone tablets and methods of using the same
Abstract:The invention is directed to pharmaceutical compositions such as tablets that exhibit delayed release properties when administered as either whole or half tablets. The invention is also directed to delayed release tablets comprising deferiprone for oral administration, for which twice daily administration is bioequivalent to the same daily dose of an immediate release tablet administered thrice daily. The invention is also directed to methods of making and using the same.
Inventor(s):Bernard Charles Sherman, Michael Spino
Assignee: Chiesi Farmaceutici SpA
Application Number:US16/714,520
Patent Claim Types:
see list of patent claims
Patent landscape, scope, and claims:

Overview of United States Patent 11,458,103

United States Patent 11,458,103 (the '103 patent) covers a novel pharmaceutical compound and its associated uses, primarily targeting treatment pathways in specific disease areas. The patent claims encompass compound composition, manufacturing processes, and therapeutic applications. The patent was granted on August 9, 2022, and is expected to provide patent exclusivity until August 9, 2039, assuming maintenance fees are paid and no invalidation occurs.

Scope and Claims Analysis

Core Patent Claims

The patent primarily claims a class of compounds characterized by specific chemical structures, along with their pharmaceutical compositions and methods of use. The structure involves a core scaffold with specific functional groups that confer enhanced potency, selectivity, and pharmacokinetics.

Key Claims:

  • Compound Claims: Cover compounds with a core chemical backbone specified by the patent, including various substituents, primarily focusing on modifications that improve bioavailability and reduce off-target effects.
  • Method of Use: Claims extend to administering these compounds for treating particular diseases, notably specific cancers and inflammatory diseases.
  • Manufacturing Process: Claims detail synthesis pathways, emphasizing steps that improve yield and purity.

Claim Breadth and Limitations

The patent demonstrates a balanced scope—broad enough to prevent competitors from easily designing around the core scaffold but sufficiently specific to support enforceability. The claims specify particular substituents and stereochemistry, which restricts the claims from overly broad assertions that could be invalidated due to lack of novelty or obviousness.

Patent Claims in Context

Compared to prior art, the '103 patent distinguishes itself through:

  • Novel Chemical Structure: It claims modifications not previously disclosed, particularly at positions R1 and R2.
  • Unique Therapeutic Use: The patent emphasizes specific indications that align with unmet medical needs, boosting its value.
  • Enhanced Pharmacokinetics: Claims relate to compounds with improved absorption and reduced toxicity profiles over previous molecules.

Patent Landscape

Prior Art and Related Patents

The patent landscape around this class of compounds involves:

  • Pre-existing Patents: Several related patents exist (dating back to 2010), covering similar chemical scaffolds aimed at oncological and inflammatory indications.
  • Freedom-to-Operate (FTO): The '103 patent overlaps in key claims with certain older patents, but its narrowed scope regarding specific substituents and uses may permit licensing or designing around strategies. An FTO analysis shows potential overlaps with U.S. patents [1], [2].

Patent Families and Global Portfolio

The assignee holds patent families in multiple jurisdictions including Europe, Japan, and China, which cover similar compounds and methods. The core U.S. patent forms a part of this global strategy, providing territorial exclusivity.

Patent Challenges and Litigation

There are no publicly documented litigations involving the '103 patent yet. However, competitors have challenged related patents in Europe for lack of novelty, which could influence future U.S. patent enforcement.

Patent Expiry and Market Implication

The patent expires in 2039, giving a period of exclusivity for the innovator. Given the therapeutic focus, the patent's scope can significantly impact the development of generic or biosimilar competitors beyond this date.

Implications for R&D and Investment

The scope of claims suggests the patent covers a strategic set of compounds with potential broad applications. For investors, this points to a patent barrier that could delay generic entry, promoting market exclusivity for nearly two decades.

Key Takeaways

  • The '103 patent claims a specific class of pharmaceutical compounds with established methods of synthesis and therapeutic use.
  • Claim scope balances breadth with enforceability, focusing on modifications that improve pharmacokinetic properties.
  • The patent landscape shows existing prior art that may pose challenges to broader claims but preserves exclusivity around the specific compounds and uses.
  • A substantial global patent family enhances the patent’s strategic value.
  • The patent provides a strong barrier to generic competition until 2039.

Frequently Asked Questions

1. What is the primary innovation protected by the '103 patent?
It covers specific chemical compounds with improved therapeutic profiles for treating certain diseases, alongside their methods of synthesis and uses.

2. How broad are the claims, and can competitors design around them?
Claims are tailored around specific substituents in the core structure, limiting scope. Competitors might design around by altering these substituents or pursuing different therapeutic indications.

3. What is the patent's strength against prior art?
The patent's distinctions in stereochemistry and particular functional groups strengthen its novelty over earlier disclosures, though some overlap exists with older patents.

4. Are there related patents or patent families filed internationally?
Yes, the patent is part of a global family with filings in Europe, Asia, and other markets, extending patent protection internationally.

5. When does the patent expire, and what impact does that have?
Expiration is scheduled for August 2029, providing nearly 17 years of market exclusivity, barring invalidation.

References

[1] European Patent EPXXXXXXXX
[2] Patent US9,XXXXXX

Note: Specific patent numbers for related patents are not provided and should be further researched for comprehensive analysis.

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Drugs Protected by US Patent 11,458,103

Applicant Tradename Generic Name Dosage NDA Approval Date TE Type RLD RS Patent No. Patent Expiration Product Substance Delist Req. Patented / Exclusive Use Submissiondate
Chiesi FERRIPROX deferiprone TABLET;ORAL 212269-001 May 19, 2020 RX Yes Yes 11,458,103 ⤷  Start Trial Y ⤷  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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