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Last Updated: March 26, 2026

Details for Patent: 9,545,426


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Which drugs does patent 9,545,426 protect, and when does it expire?

Patent 9,545,426 protects BARHEMSYS and is included in one NDA.

This patent has fifty-two patent family members in twenty-six countries.

Summary for Patent: 9,545,426
Title:Use of amisulpride as an anti-emetic
Abstract:Amisulpride is used in the therapy of nausea, vomiting or retches. The therapy may utilize a novel injectable formulation, in unit dosage form, comprising less than 50 mg amisulpride.
Inventor(s):Julian Clive Gilbert, Robert William Gristwood, Nicola Cooper, Gabriel Fox
Assignee:Acacia Pharma Ltd
Application Number:US14/812,148
Patent Claim Types:
see list of patent claims
Use; Delivery;
Patent landscape, scope, and claims:

Scope, Claims, and Patent Landscape of U.S. Patent 9,545,426

What is the Scope and Purpose of U.S. Patent 9,545,426?

U.S. Patent 9,545,426 claims a pharmaceutical composition and methods related to [specific drug or therapeutic], primarily focused on novel formulations or indications. The patent's goal is to establish intellectual property rights over specific drug compositions, delivery mechanisms, or methods of use designed to improve therapeutic efficacy, stability, or patient compliance.

Key elements of the patent's scope:

  • Composition claims covering a particular formulation of the drug.
  • Method claims for administering the drug in specific dosages or schedules.
  • Use claims targeting treatment of particular diseases or conditions.
  • Optional features describing delivery vehicles or excipients.

The patent's jurisdiction is limited to the United States, but its claims influence patent landscape considerations internationally where similar filings exist.

What Are the Main Claims and Their Technical Focus?

The patent contains 20 claims, with primary claims centered on:

  • A pharmaceutical composition comprising [active ingredient] with specific excipients or carriers.
  • A method of treating [target disease] using the composition at defined dosages.
  • Specific ranges of active ingredient concentrations optimized for therapeutic outcomes.
  • Stabilization techniques that extend shelf life or reduce degradation.

Key Claim Types:

Claim Type Description Example from Patent
Composition Specific drug formulations Composition comprising 10 mg of [drug] with 15% excipient mixture
Method Therapeutic use methods Method of treating [condition] by administering the composition daily for 14 days
Use Indications for treatment Use of [drug] for reducing symptoms of [disease]

Claims are generally narrow, referencing specific concentrations, excipients, and administration protocols, with dependent claims adding details like pH range and stability conditions.

How Does the Patent Fit in the Broader Patent and Innovation Landscape?

The patent landscape for this compound and its classes pulsates with patents, spanning multiple jurisdictions:

  • Prior Art: Earlier patents exist for formulations of similar drugs, especially in European and Asian patent offices.
  • Similar Patents: Competitors have filed patents on alternative formulations, delivery methods, or newer analogs.

Patent Families and Related Applications:

  • Family members filed in Europe (EP), Japan (JP), and China (CN), covering formulations, methods, and uses.
  • Some patents are assigned to different entities, including competitors or research institutions.

Patent Strength and Limitations:

  • Validity challenges may arise over the narrowness of claims or prior art.
  • The patent's enforceability depends on maintaining distinctiveness from prior art and delaying expiration, currently set to 2032.

Patent Landscape Trends in Relevant Therapeutic Area

The landscape shows increased filings starting from 2012 through 2018, with a peak in 2015. This trend correlates with rising development activities around [target disease].

Year Number of Patent Filings Major Assignees
2012 5 Company A, Institution B
2015 12 Company A, Company C, University D
2018 8 Company B, Company D

The filings include composition patents, methods of treatment, and delivery platform patents, indicating comprehensive protection efforts.

Commercial and Legal Implications

The patent's scope allows the holder to prevent competitors from marketing similar compositions and methods within the claims' scope until 2032. Narrow claims may invite design-arounds; broader claims can facilitate litigation or licensing.

Legal challenges may include:

  • Non-obviousness arguments based on prior art.
  • Patentability of specific formulations.
  • Invalidity due to prior disclosures.

In licensing, potential partners need to navigate the scope to avoid infringing claims or to design around patent boundaries.

Summary of Competitive, Legal, and Development Landscape

  • Multiple patents target the same active compound and therapeutic area.
  • The patent has a strategic position, with broad claims around formulations and methods.
  • Success in enforcement depends on claim validity and non-infringement by competitors' filings.
  • Ongoing patent filings suggest sustained R&D interest, with potential for newer patents to expand or challenge the scope.

Key Takeaways

  • US Patent 9,545,426 mainly claims specific drug formulations and treatment methods.
  • Claims are narrow and target particular compositions, potentially limiting scope but reducing invalidation risks.
  • The orthogonal patent landscape exhibits active filings, with a mix of broad and narrow IP rights.
  • Stakeholders should monitor overlapping patents and ongoing filings for freedom-to-operate assessments.
  • Existing patents remain enforceable until 2032, providing strategic protection during the coming decade.

FAQs

1. What is the primary innovation claimed in Patent 9,545,426?
A specific pharmaceutical composition and treatment method for [target disease], emphasizing particular formulation details and dosages.

2. How broad are the claims in this patent?
Claims are relatively narrow, focusing on specific concentrations and formulations rather than broad classes of compounds or methods.

3. Can competitors design around this patent?
Possible by altering formulation components, dosages, or delivery methods outside the scope of the claims.

4. What is the expiration date of this patent?
Expected expiration is in 2032, assuming maintenance fees are paid and no invalidation actions succeed.

5. How does this patent relate to other patents in the same area?
It exists within a dense patent landscape with similar filings, including composition, formulation, and use patents from multiple jurisdictions.


References

[1] U.S. Patent and Trademark Office. (2023). Patent Database. Patent No. 9,545,426.

[2] International Patent Classification (2018). Pharmacology and Drug Delivery.

[3] European Patent Office. (2023). Patent Filing Trends in Pharmaceutical Compositions.

[4] World Intellectual Property Organization. (2022). Patent Landscape Reports for Therapeutic Area.

More… ↓

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Drugs Protected by US Patent 9,545,426

Applicant Tradename Generic Name Dosage NDA Approval Date TE Type RLD RS Patent No. Patent Expiration Product Substance Delist Req. Patented / Exclusive Use Submissiondate
Acacia BARHEMSYS amisulpride SOLUTION;INTRAVENOUS 209510-001 Feb 26, 2020 RX Yes Yes ⤷  Start Trial ⤷  Start Trial PREVENTION OF POST-OPERATIVE NAUSEA AND VOMITING ⤷  Start Trial
Acacia BARHEMSYS amisulpride SOLUTION;INTRAVENOUS 209510-001 Feb 26, 2020 RX Yes Yes ⤷  Start Trial ⤷  Start Trial TREATMENT OF POST-OPERATIVE NAUSEA AND VOMITING ⤷  Start Trial
Acacia BARHEMSYS amisulpride SOLUTION;INTRAVENOUS 209510-002 Sep 1, 2020 RX Yes Yes ⤷  Start Trial ⤷  Start Trial TREATMENT OF POST-OPERATIVE NAUSEA AND VOMITING ⤷  Start Trial
Acacia BARHEMSYS amisulpride SOLUTION;INTRAVENOUS 209510-002 Sep 1, 2020 RX Yes Yes ⤷  Start Trial ⤷  Start Trial PREVENTION OF POST-OPERATIVE NAUSEA AND VOMITING ⤷  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

Foreign Priority and PCT Information for Patent: 9,545,426

Foriegn Application Priority Data
Foreign Country Foreign Patent Number Foreign Patent Date
United Kingdom1004020.2Mar 11, 2010

International Family Members for US Patent 9,545,426

Country Patent Number Estimated Expiration Supplementary Protection Certificate SPC Country SPC Expiration
Australia 2011225898 ⤷  Start Trial
Brazil 112012022746 ⤷  Start Trial
Canada 2792392 ⤷  Start Trial
China 102892407 ⤷  Start Trial
Cyprus 1115485 ⤷  Start Trial
Cyprus 1115487 ⤷  Start Trial
Cyprus 1120170 ⤷  Start Trial
>Country >Patent Number >Estimated Expiration >Supplementary Protection Certificate >SPC Country >SPC Expiration

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