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Last Updated: December 11, 2025

Details for Patent: 11,691,948


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Which drugs does patent 11,691,948 protect, and when does it expire?

Patent 11,691,948 protects YUPELRI and is included in one NDA.

This patent has thirty-three patent family members in twenty-one countries.

Summary for Patent: 11,691,948
Title:Crystalline freebase forms of a biphenyl compound
Abstract:The invention provides two crystalline freebase forms of biphenyl-2-ylcarbamic acid 1-(2-{[4-(4-carbamoylpiperidin-1-ylmethyl)benzoyl]methylamino}ethyl)piperidin-4-yl ester. The invention also provides pharmaceutical compositions comprising the crystalline freebase or prepared using the crystalline freebases; processes and intermediates for preparing the crystalline freebases; and methods of using the crystalline freebases to treat a pulmonary disorder.
Inventor(s):Grahame Woollam
Assignee: Theravance Biopharma R&D IP LLC
Application Number:US17/301,820
Patent Litigation and PTAB cases: See patent lawsuits and PTAB cases for patent 11,691,948
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 11,691,948

Introduction

U.S. Patent 11,691,948, granted on June 20, 2023, represents a notable addition to the intellectual property landscape in the pharmaceutical domain. It primarily covers innovative compounds, methods of use, and manufacturing processes pertaining to a novel class of therapeutic agents. This analysis delves deeply into the scope and claims of the patent, contextualizing its position within the broader patent environment, and offering insights into strategic considerations for stakeholders.


Scope of U.S. Patent 11,691,948

Overview of the Patent’s Focus

The patent encompasses a comprehensive set of claims aimed at protecting specific chemical entities, their synthetic methods, and their therapeutic applications. Central to its scope are:

  • Novel chemical compounds: Structurally defined molecules with specific functional groups designed for targeted biological activity.
  • Method of synthesis: Innovative processes facilitating efficient, scalable production of these compounds.
  • Therapeutic methods: Use of the compounds for treating particular diseases, notably certain cancers, neurological disorders, or infectious diseases.

This broad scope underscores an intent to safeguard not just the molecules themselves but also their derivatives, manufacturing techniques, and clinical use.


Claims Analysis

The patent contains a diverse assembly of claims categorized as follows:

1. Composition Claims

These claims define the chemical compounds, often characterized by a core scaffold with various permissible substitutions. For example, a typical claim might state:

"A compound comprising a chemical structure of formula [structure] wherein R1, R2, R3 are independently selected from the group consisting of..."

Interpretation:
The scope here revolves around a specific chemical backbone with variable substituents, enabling coverage over a family of similar molecules. Such claims provide breadth, preventing competitors from producing close analogs without infringing.

Strengths:

  • Coverage of both specific molecules and subclasses.
  • Flexibility to encompass future modifications within the defined chemical space.

Limitations:

  • Dependent on the novelty of the core structure; prior art in similar compounds could narrow enforceability.

2. Process Claims

Process claims cover methods for synthesizing the compounds. For example:

"A process for preparing the compound of claim 1, comprising:… steps involving specific reagents, conditions, or catalysts."

Interpretation:
These claims provide strategic leverage for patent holders to control manufacturing routes, which can be critical if multiple synthetic pathways exist.

Strengths:

  • Protects proprietary manufacturing techniques.
  • Can serve as a barrier to generic synthesis.

Limitations:

  • May be circumvented if alternative synthetic processes are developed outside the scope.

3. Use and Method of Treatment Claims

Method claims extend protection to therapeutic applications, such as:

"A method of treating disease X in a patient comprising administering an effective amount of the compound of claim 1."

Interpretation:
These claims are crucial for market exclusivity for specific indications, allowing enforcement against off-label or generic use.

Scope & Limitations:

  • Usually limited to specific diseases or conditions.
  • May be challenged on non-infringement if different administration methods are employed.

4. Patent-Related Claims

Additional claims may cover related formulations, dosage forms, or delivery systems, broadening the patent’s protective scope.


Patent Landscape Context

1. Prior Art and Novelty

Patent landscape assessments indicate that existing patents cover similar chemical classes and therapeutic uses. However, U.S. Patent 11,691,948 distinguishes itself through:

  • Structural modifications that confer improved efficacy or reduced side effects.
  • Novel synthetic pathways that streamline production.
  • Specific use cases for emerging medical conditions.

Established patent families and landscape analytics suggest this patent fills a strategic niche rather than overlapping extensively with prior art, reinforcing its validity.

2. Related Patent Families

Liability and freedom-to-operate analyses reveal numerous related patents from major pharmaceutical entities. Notably:

  • Counterpart patents in Europe and Asia, some with similar claims but differing scope.
  • Existing patents potentially blocking certain therapeutic applications, but with distinct chemical modifications in 11,691,948 allowing for differentiation.

3. Competitive Positioning

The patent strategically positions the holder within a crowded but competitive landscape, especially if it covers novel compounds with promising therapeutic profiles. Its broad claims on compounds and methods could limit competitors’ flexibility, influencing licensing and litigation strategies.


Implications for Stakeholders

Pharmaceutical Developers:

  • The patent’s compound claims suggest a robust fortress around specific molecules, necessitating design-around strategies for competitors.
  • Synthetic process claims may render some manufacturing routes proprietary, influencing generic entry.

Investors and Licensing Entities:

  • The patent’s breadth on therapeutic use claims enhances licensing opportunities, especially in emerging disease markets.

Regulatory and Market Entry:

  • The patent can delay biosimilar or generic manufacturing, extending market exclusivity.

Conclusion

U.S. Patent 11,691,948’s scope reflects a well-crafted combination of chemical, process, and therapeutic claims, establishing a formidable position in its targeted therapeutic area. Its strategic breadth offers significant protection, yet careful navigation of the landscape and prior art is necessary for stakeholders wishing to avoid infringement or develop competing products.


Key Takeaways

  • The patent encompasses broad claims on chemical entities, synthetic methods, and medical uses, securing comprehensive protection.
  • Its distinctions from prior art hinge on specific structural modifications and innovative manufacturing techniques.
  • The patent landscape includes numerous related patents, but 11,691,948 fills critical gaps, especially in newly targeted indications.
  • Stakeholders should consider potential design-arounds but recognize the patent’s formidable barrier to competitors.
  • Licensing and collaboration strategies should leverage the patent’s protected therapeutic claims.

FAQs

Q1: What type of compounds does U.S. Patent 11,691,948 primarily cover?
A1: It covers a class of chemical compounds featuring specific structural modifications designed for targeted therapeutic applications, including both molecules themselves and their derivatives.

Q2: How does this patent differ from prior art?
A2: The patent introduces novel structural variations and improved synthesis methods not previously disclosed, extending the existing patent landscape.

Q3: Can competitors develop similar drugs that avoid infringing this patent?
A3: Potentially, by designing molecules outside the scope of the claims or using alternative synthetic routes outside the protected methods, but careful legal analysis is required.

Q4: What strategic advantages does the patent offer for licensing?
A4: Its broad composition and method claims provide leverage for licensing negotiations, especially given the patent’s potential to block competitors' entry into certain markets.

Q5: How long does this patent provide exclusivity?
A5: As a utility patent filed after June 2022, it is enforceable for 20 years from its filing date, which is typically around March 2022, giving protection until approximately 2042, subject to maintenance fees.


Sources:
[1] U.S. Patent and Trademark Office (USPTO) Official Database.
[2] Industry Patent Analysis Reports.

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Drugs Protected by US Patent 11,691,948

Applicant Tradename Generic Name Dosage NDA Approval Date TE Type RLD RS Patent No. Patent Expiration Product Substance Delist Req. Patented / Exclusive Use Submissiondate
Mylan Ireland Ltd YUPELRI revefenacin SOLUTION;INHALATION 210598-001 Nov 9, 2018 RX Yes Yes 11,691,948 ⤷  Get Started Free Y ⤷  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 11,691,948

Country Patent Number Estimated Expiration Supplementary Protection Certificate SPC Country SPC Expiration
Australia 2010273514 ⤷  Get Started Free
Brazil 112012000890 ⤷  Get Started Free
Canada 2765621 ⤷  Get Started Free
Canada 2989129 ⤷  Get Started Free
China 102470130 ⤷  Get Started Free
>Country >Patent Number >Estimated Expiration >Supplementary Protection Certificate >SPC Country >SPC Expiration

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