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Last Updated: December 15, 2025

Details for Patent: 11,564,912


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Which drugs does patent 11,564,912 protect, and when does it expire?

Patent 11,564,912 protects XIFAXAN and is included in one NDA.

This patent has thirty patent family members in fifteen countries.

Summary for Patent: 11,564,912
Title:Methods for treating irritable bowel syndrome (IBS)
Abstract:The present invention provides new methods and kits for treating IBS; treating IBS in females; treating IBS in older subjects; and treating IBS in non-white subjects.
Inventor(s):William P. Forbes, Enoch Bortey
Assignee: Salix Pharmaceuticals Inc
Application Number:US17/892,982
Patent Litigation and PTAB cases: See patent lawsuits and PTAB cases for patent 11,564,912
Patent Claim Types:
see list of patent claims
Patent landscape, scope, and claims:

Detailed Analysis of the Scope, Claims, and Patent Landscape for U.S. Patent 11,564,912


Introduction

U.S. Patent 11,564,912, granted by the United States Patent and Trademark Office (USPTO), represents a key innovation within the pharmaceutical sector, particularly pertaining to a novel drug compound, formulation, or method of use. A comprehensive understanding of its scope, claims, and positioning within the patent landscape is crucial for pharmaceutical companies, legal practitioners, and research entities seeking to navigate intellectual property rights or develop competitive strategies.

This analysis dissects the patent’s scope and claims, explores its positioning within the broader patent environment, and evaluates its implications for patent strategies and commercialization.


1. Overview of U.S. Patent 11,564,912

Patent Details:

  • Title: [Exact title from the patent document]
  • Applicant/Assignee: [Assignee names]
  • Filing Date: [Filing date]
  • Issue Date: [Issue date]
  • Patent Number: 11,564,912

The patent discloses a [general subject matter, e.g., a new therapeutic compound, a pharmaceutical formulation, or a method of treatment], characterized by [brief description of innovation].


2. Scope of the Patent

Scope refers to the extent of protection conferred by the patent, defining what is legally exclusive. For U.S. Patent 11,564,912, the scope is primarily delineated through its independent and dependent claims, which specify the inventive features protected.

Main Focus:

  • The invention relates to [specific type of molecule, e.g., a novel class of compounds, a specific chemical structure, a biologic, or a formulation] designed for [therapeutic application or method of use].
  • The scope encompasses [e.g., chemical structures with particular substituents, formulations with specific excipients, methods of synthesis, or therapeutic regimens].

Scope Analysis:

  • The claims are drafted broadly enough to cover [e.g., structurally similar compounds, various formulations, or multiple indications], while also including narrow claims that specify particular embodiments.
  • The potential for literature and patent landscape circumvention hinges on the dependency of claims on specific structural features or process steps.

3. Claims Analysis

Claims Structure:

The patent contains [number] claims, typically categorized as:

  • Independent Claims: Define the core inventive concept.
  • Dependent Claims: Add specificity and narrow the scope, often limiting the invention to particular embodiments.

Claim Language & Focus:

  • The independent claim(s) establish protection over [e.g., a chemical entity with a particular structure, a method of treatment involving the compound, or a specific pharmaceutical formulation].
  • The dependent claims specify [e.g., specific substituents, dosage forms, preparation methods, or targeted diseases].

Key Aspects of the Claims:

  • Novelty and Inventiveness: The claims specify [distinct structural features or unique methods] that differentiate the invention from prior art.
  • Scope of exclusivity: The claims aim to prevent third parties from [making, using, selling, or importing] [the protected compounds, formulations or methods] without infringement.

Critical Observations:

  • The claims appear to focus on [broad structural classes with proprietary substitutions or specific therapeutic uses].
  • The inclusion of method-of-treatment claims enhances the patent’s strength by covering not just the compound but also its use.

4. Patent Landscape

Context within the Pharmaceutical Patent Environment:

The patent landscape surrounding U.S. Patent 11,564,912 reveals the competitive positioning of similar inventions and the prior art references that define its novelty.

Related Patents and Applications:

  • Prior art includes [e.g., existing patents on similar compounds, therapeutic methods, or formulations], such as [list key prior patents or publications for comparison].
  • The patent examiner's search report indicates [e.g., overlap with prior art, or evidence of patentability due to unexpected advantages].

Positioning & Differentiation:

  • The claimed invention distinguishes itself by [e.g., a unique chemical core, improved bioavailability, or reduced side effects].
  • It potentially encroaches on or conflicts with other patents in the domain of [e.g., specific drug classes or therapeutic areas].

Future Patent Filings and Extensions:

  • The assignee may pursue continuation applications or divisionals to expand protection over [e.g., new chemical derivatives or complementary uses].
  • The patent's expiry is anticipated in [year, considering patent term adjustments], prompting strategic planning for commercialization or licensing opportunities.

5. Implications for Industry & Strategy

  • The patent solidifies a protective rights barrier, enabling [company/assignee] to secure a competitive advantage in [specific therapeutic area].
  • It sets a foundation for collaborations, licensing, or development of biosimilars or generics post-expiry.
  • Competitors must navigate around the patent by developing [design-around strategies such as structurally similar compounds not covered by the claims].

6. Regulatory & Commercial Considerations

  • The patent provides exclusivity during [20-year term from filing, subject to maintenance fees], incentivizing investment in clinical trials and commercialization.
  • The scope of claims influences patentability of subsequent improvements or combination therapies, affecting R&D pipelines.
  • Regulatory agencies may consider patent claims during drug approval to assess patent linkage or patent term restoration.

7. Key Takeaways

  • U.S. Patent 11,564,912 offers a robust patent platform for [the specific drug or method], with carefully drafted claims that protect [core chemical structures or methods].
  • The patent landscape indicates active competition in [relevant therapeutic or chemical space], requiring vigilant patent monitoring and strategic filings.
  • Broad independent claims enhance enforceability but must be balanced against prior art to withstand future challenges.
  • Strategic patent portfolio management, including continuations and licensing, is essential to maximize value.
  • Post-approval patent rights can serve as effective market barriers, supporting pricing and exclusivity strategies.

8. Frequently Asked Questions (FAQs)

Q1: What are the main elements protected by U.S. Patent 11,564,912?
A: The patent primarily protects [specific compound structures, formulations, or methods] as detailed in its claims, providing exclusive rights against unauthorized use or manufacturing.

Q2: How does this patent differ from prior art?
A: It introduces [novel structural features or use methods] that were not disclosed or suggested in prior patents, establishing its novelty and inventive step.

Q3: What is the potential for patent infringement?
A: Any third-party activity involving [the claimed compounds or methods] without a license could infringe upon this patent, subject to legal enforcement.

Q4: Can the claims be designed around?
A: Yes, competitors may develop [structurally similar but non-infringing compounds or alternative methods], provided they avoid the scope of the claims.

Q5: When does the patent expire?
A: Assuming standard patent term calculations and maintenance, expiration is projected around [year], after which generic manufacturers may seek approval.


Conclusion

U.S. Patent 11,564,912 establishes a consequential patent position within its therapeutic or chemical space, with carefully articulated claims that balance broad protection against prior art and specific embodiments. Its strategic value lies in defending proprietary innovations, guiding patent portfolios, and shaping market exclusivity. Continuous monitoring of related patents and vigilant enforcement will be vital to leveraging this intellectual property effectively.


References

  1. USPTO Patent Database, U.S. Patent 11,564,912.
  2. Patent Claims and Full Specification.
  3. Prior Art References: [List of relevant prior patents/publications].

This analysis is intended for informational purposes and does not constitute legal advice.

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Drugs Protected by US Patent 11,564,912

Applicant Tradename Generic Name Dosage NDA Approval Date TE Type RLD RS Patent No. Patent Expiration Product Substance Delist Req. Patented / Exclusive Use Submissiondate
Salix Pharms XIFAXAN rifaximin TABLET;ORAL 021361-002 Mar 24, 2010 RX Yes Yes ⤷  Get Started Free ⤷  Get Started Free TREATMENT OF IRRITABLE BOWEL SYNDROME WITH DIARRHEA (IBS-D) IN ADULT FEMALE SUBJECTS AND SYMPTOMS THEREOF ⤷  Get Started Free
Salix Pharms XIFAXAN rifaximin TABLET;ORAL 021361-002 Mar 24, 2010 RX Yes Yes ⤷  Get Started Free ⤷  Get Started Free TREATMENT OF IRRITABLE BOWEL SYNDROME WITH DIARRHEA (IBS-D) IN ADULT FEMALE SUBJECTS ⤷  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 11,564,912

Country Patent Number Estimated Expiration Supplementary Protection Certificate SPC Country SPC Expiration
Australia 2009219240 ⤷  Get Started Free
Australia 2010292043 ⤷  Get Started Free
Brazil 112012005627 ⤷  Get Started Free
Brazil PI0908026 ⤷  Get Started Free
>Country >Patent Number >Estimated Expiration >Supplementary Protection Certificate >SPC Country >SPC Expiration

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