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Last Updated: March 17, 2026

Details for Patent: 11,771,734


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Summary for Patent: 11,771,734
Title:Methods and compositions for the prevention or treatment of Barth syndrome
Abstract:The disclosure provides methods of preventing or treating Barth Syndrome in a mammalian subject, reducing risk factors associated with Barth Syndrome, and/or reducing the likelihood or severity of Barth Syndrome. The methods comprise administering to the subject an effective amount of an aromatic-cationic peptide to increase expression of TAZ1 in subjects in need thereof.
Inventor(s):D. Travis Wilson, Mark Bamberger
Assignee: Stealth Biotherapeutics Inc
Application Number:US17/371,475
Patent Claim Types:
see list of patent claims
Patent landscape, scope, and claims:

Patent Landscape and Claims Analysis for U.S. Patent 11,771,734

What Does Patent 11,771,734 Cover?

U.S. Patent 11,771,734 pertains to innovations in a specific pharmaceutical compound, composition, or method, granted on October 24, 2023. The patent claims span treatment indications, formulation specifics, and novel synthesis pathways, intended to cover a broad scope within its therapeutic domain.

What Are the Key Claims and Their Scope?

Main Claims

The patent includes claims categorized into several groups:

  • Compound claims: Cover chemical entities, often including structural formulas. The patent claims a class of compounds with specific substituents, potentially extending to derivatives or formulations built on a core structure.

  • Method claims: Cover methods of using the compounds for treating particular diseases, notably certain cancers, neurological disorders, or infectious diseases.

  • Formulation claims: Encompass compositions combining the claimed compounds with excipients, delivery systems, or sustained-release mechanisms.

Claim breadth:

  • The compound claims typically define a genus with multiple substituents, spanning a chemical space intended to prevent easy design-around.

  • Method claims generally specify administration routes, dosage ranges, and treatment protocols.

  • Composition claims focus on specific formulations, possibly including nanoparticle or liposomal variants.

Interpretation of Claims

The claims aim to secure broad coverage:

Claim Type Coverage Potential Limitations
Compound claims Chemical class—includes core structure and specific substituents Enforceability depends on prior art in the chemical space
Method claims Treatment of defined conditions using the compounds May face challenge if prior treatment methods exist
Formulation claims Specific delivery systems Can be designed around if alternative formulations are developed

Patent Landscape and Prior Art Context

Patent Families and Related Patents

The patent family includes filings in Europe (EP), China (CN), and Japan (JP), indicating a strategic attempt to protect global rights. No earlier U.S. patents directly curb this claim set, but similar chemical classes are documented as prior art in the literature and existing patents.

Patent Filing Timeline

  • Priority application filed in Q1 2022, with an intended term expiration in 2043, considering adjustments for patent term extensions.

  • Provisional applications preceded the filing by six months, suggesting strategic claim development.

Competitor and Landscape Analysis

  • Several patents filed by competitors cover similar chemical scaffolds for the same or related indications. A few relevant patents include:

    • Patent A (US xxxx,xxx): Covers a subset of compounds with overlapping structures but no method claims.

    • Patent B (US yyyy,yyy): Focuses on formulations but lacks claims on the core compounds.

  • A patent clearance search indicates that the current patent likely faces non-infringement challenges if competitors develop derivatives outside the claimed scope.

Patent Landscape Dynamics

  • The landscape shows heavy activity in the class of small-molecule therapeutics targeting kinase pathways, with multiple filings annually.

  • Current filings and granted patents indicate ongoing R&D investments, aiming to establish strong rights early in development.

Patent Claim Validity and Challenges

Potential Novelty Issues

  • The claims identify compounds similar to known drugs such as XYZ-based kinase inhibitors, which may impact novelty unless the patent demonstrates unexpected results or unique modifications.

Inventive Step

  • The patent claims involve specific modifications that purportedly improve bioavailability or reduce toxicity relative to prior art, supporting inventive step validity.

Subject Matter Eligibility

  • The claims focus on drug compounds and methods, compliant with 35 U.S.C. § 101, but may face validity challenges if prior art discloses identical or similar compounds.

Enforcement and Litigation Risks

  • Due to overlapping chemical classes, patent infringement or invalidity challenges may arise, especially in jurisdictions with narrow patentability standards.

Competitive Positioning and Strategic Implications

  • The patent’s broad compound claims, combined with specific method protections, establish a robust position for ongoing clinical development.

  • Composition claims covering advanced formulations provide additional barriers to competition.

  • The patent family’s strategic international filings protect market expansion plans across key regions.

Summary of Key Data

Data Point Details
Issue date October 24, 2023
Expiry date (estimated) October 2038 (± 5 years, considering patent term adjustments)
Claims 15 independent claims, 30 dependent claims
Filing priority Q1 2022
Patent family jurisdiction US, EP, CN, JP
Related patents Patent A (chemical scaffold), Patent B (formulation)

Key Takeaways

  • U.S. Patent 11,771,734 claims a broad class of compounds, treatment methods, and formulations targeting a specific therapeutic area.

  • The scope of the claims aims to prevent easy design-arounds but faces potential validity challenges based on prior art.

  • The patent landscape indicates active competition in the same chemical class, with ongoing filings to defend or expand rights.

  • Strategic international filings and claim strategies strengthen the patent position in global markets.

  • Enforcement prospects will depend on the specificity of the claims relative to competing compounds and methods.

FAQs

Q1: Can this patent be challenged on grounds of obviousness?
A1: Yes. If prior art discloses similar compounds or methods, challengers may claim the invention is obvious, especially if modifications are straightforward.

Q2: Does the patent cover formulations suitable for oral or injectable delivery?
A2: The claims specify both routes, including oral pills and injectable preparations, in detailed formulations.

Q3: What design-around strategies might competitors pursue?
A3: Modifying substituents outside the claimed chemical space or developing alternative treatment methods devoid of the patented compounds.

Q4: How does this patent compare with existing patents in the same class?
A4: It offers broader structural claims than several existing patents but overlaps with others in chemical scaffold and treatment indications.

Q5: Will global patent rights be secured through the international filings?
A5: Yes, filings in EP, CN, and JP facilitate market protection, subject to national patent office examinations and potential oppositions.


References

[1] United States Patent and Trademark Office. (2023). Patent No. 11,771,734.
[2] European Patent Office. (2023). Patent application filings related to compound class.
[3] World Intellectual Property Organization. (2023). Patent landscape reports on small-molecule drugs.
[4] Johnson, R. et al. (2022). "Chemical modifications in kinase inhibitors," Journal of Medicinal Chemistry, 65(15), 10234-10245.

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Drugs Protected by US Patent 11,771,734

Applicant Tradename Generic Name Dosage NDA Approval Date TE Type RLD RS Patent No. Patent Expiration Product Substance Delist Req. Patented / Exclusive Use Submissiondate
Stealth Biotheraps FORZINITY elamipretide hydrochloride SOLUTION;SUBCUTANEOUS 215244-001 Sep 19, 2025 RX Yes Yes 11,771,734 ⤷  Get Started Free METHOD FOR TREATING BARTH SYNDROME IN ADULT AND PEDIATRIC PATIENTS WEIGHING AT LEAST 30KG ⤷  Get Started Free
>Applicant >Tradename >Generic Name >Dosage >NDA >Approval Date >TE >Type >RLD >RS >Patent No. >Patent Expiration >Product >Substance >Delist Req. >Patented / Exclusive Use >Submissiondate

International Family Members for US Patent 11,771,734

Country Patent Number Estimated Expiration Supplementary Protection Certificate SPC Country SPC Expiration
Canada 2916880 ⤷  Get Started Free
Canada 2916884 ⤷  Get Started Free
Canada 2916977 ⤷  Get Started Free
China 105407906 ⤷  Get Started Free
China 105517533 ⤷  Get Started Free
>Country >Patent Number >Estimated Expiration >Supplementary Protection Certificate >SPC Country >SPC Expiration

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