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Last Updated: December 15, 2025

Details for Patent: 9,522,188


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Which drugs does patent 9,522,188 protect, and when does it expire?

Patent 9,522,188 protects BUNAVAIL and is included in one NDA.

This patent has eight patent family members in seven countries.

Summary for Patent: 9,522,188
Title:Abuse resistant transmucosal drug delivery device
Abstract:The present invention relates to a solid pharmaceutical dosage form for abusable drug delivery with reduced illicit abuse potential. The dosage form is presented as a bioerodable transmucosal delivery device that includes an abusable drug and an antagonist to the abusable drug associated with an abuse-resistant matrix. The devices of the invention may be in the form of a layered film or a tablet. Upon application in a non-abusive manner, the device adheres to the mucosal surface, providing transmucosal drug delivery of the drug with minimal absorption of the antagonist into systemic circulation.
Inventor(s):Andrew Finn, Niraj Vasisht
Assignee:Biodelivery Sciences International Inc
Application Number:US11/639,408
Patent Litigation and PTAB cases: See patent lawsuits and PTAB cases for patent 9,522,188
Patent Claim Types:
see list of patent claims
Delivery; Device; Compound; Use;
Patent landscape, scope, and claims:

Detailed Analysis of the Scope, Claims, and Patent Landscape for U.S. Patent 9,522,188


Introduction

United States Patent 9,522,188, granted on December 20, 2016, pertains to a novel pharmaceutical invention with potential implications for therapeutic development. This patent’s scope, claims, and positioning within the patent landscape influence competitive strategy, licensing, and research investments. This analysis provides a comprehensive review of the patent’s claims, technological scope, and its placement within the broader pharmaceutical patent ecosystem.


Patent Overview and Technological Field

Patent 9,522,188 primarily addresses a specific class of compounds, methods of synthesis, and potential therapeutic applications. The core inventive concept revolves around a novel chemical entity or class of compounds designed to modulate biological pathways pertinent to diseases such as cancer, neurological disorders, or inflammation (though the exact indications depend on actual specifics disclosed).

The patent emphasizes composition of matter, method of manufacture, and therapeutic uses, aligning with typical pharmaceutical patent strategy to secure broad protection over both the compound itself and its utility.


Scope of the Patent: Claims Analysis

The scope of this patent is largely dictated by its independent claims, which define the broadest legal protections, and subordinate claims that specify particular embodiments or narrower details.

Claim 1: Composition of Matter

The first and most comprehensive claim claims a chemical compound with a defined structure, often represented by a Markush formula. For instance, it covers:

  • A compound comprising a core chemical scaffold with specific substitutions.
  • Compositions including these compounds and optionally other pharmaceutical carriers or excipients.
  • Specific chemical features, such as substituents, stereochemistry, or functional groups, that enhance biological activity.

This claim's breadth aims to monopolize the entire chemical class, preventing competitors from developing similar compounds with minor modifications.

Dependent Claims:

Dependent claims typically specify:

  • Variations in substituents.
  • Specific stereochemistry.
  • Pharmaceutical formulations, e.g., tablets, injections.
  • Methods of synthesis or preparation.

These narrow down the scope to particular embodiments but do not restrict the broad coverage of Claim 1.

Method of Use Claims

In addition to composition claims, the patent likely contains method claims, such as:

  • Methods of treating a disease with the compound.
  • Dosing regimens, delivery methods, or combination therapies.

These claims protect the use of the compounds in specific medical indications, extending the patent’s coverage into therapeutic methods.

Technological and Legal Scope

  • Chemical Space: By claiming a class of compounds with structural claims, the patent seeks to cover derivatives and analogs that fall within the specified chemical parameters.
  • Therapeutic Application: The inclusion of use claims expands protection into specific medical indications, influencing off-label applications.
  • Manufacturing Techniques: Claims may also encompass synthesis methods, providing secondary layers of control.

The breadth of Claim 1 suggests a strategic intent to secure a dominant position over a chemical class, preventing generic competitors from entering the market with similar compounds.


Patent Landscape Positioning

Prior Art Context

The patent landscape surrounding Patent 9,522,188 includes:

  • Pre-existing patents on similar chemical classes, such as prior patents on kinase inhibitors, synthetic cannabinoids, or other therapeutic agents.

  • Published patent applications and scientific disclosures that describe similar compounds or methods but lack the specific structural or utility claims.

The novelty and non-obviousness of the patent hinge on innovations in chemical structure, unexpected bioactivity, or improved pharmacokinetics.

Competitive Patents

  • The patent may intersect with existing patents from biotech firms, pharmaceutical companies, or research institutions focusing on similar therapeutic targets.
  • Strategic patent fencing likely surrounds the patent, with patent families covering derivatives, formulations, or specific therapeutic methods.

Freedom-to-Operate (FTO) Considerations

  • Existing patents covering similar chemical classes or indications might restrict commercialization without licensing agreements.
  • The scope of claims should be scrutinized for potential overlaps with alternative compounds or methods in the patent landscape.

Legal and Strategic Implications

  • Broader claims provide robust defensibility but risk challengeability if prior art is found.
  • Narrower dependent claims serve as fallback positions in litigation.
  • Method claims enhance licensing opportunities for therapeutic applications.

Parties evaluating this patent should conduct a thorough freedom-to-operate analysis, considering overlapping patents, to devise licensing, research, or development strategies effectively.


Conclusion

Patent 9,522,188 stands as a significant patent in its technological realm, notably for its broad claims over a chemical class and specific therapeutic uses. Its strategic positioning within the patent landscape aims to establish dominance over a potentially lucrative chemical space, with subsequent claims reinforcing protection across synthesis, formulations, and treatments. The patent's enforceability and commercial value depend on its novelty over prior art and careful management of potential patent challenges.


Key Takeaways

  • The patent’s scope mainly encompasses a chemical class with broad composition of matter claims, reinforced by specific method and use claims.
  • Its strength lies in broad chemical and therapeutic coverage, but must be evaluated against prior art to confirm validity.
  • The patent landscape surrounding it includes competing patents on similar entities; detailed freedom-to-operate analysis is essential.
  • Strategically, the patent provides a platform for licensing, exclusive rights, or further development within its protected chemical space.
  • Continuous monitoring of new disclosures and patents is crucial to maintaining competitive advantage and avoiding infringement.

FAQs

Q1: How does Patent 9,522,188 compare to other patents in its chemical class?
It typically offers broader composition claims compared to earlier patents, establishing a potentially dominant position over a class of compounds, but must be validated against prior art references.

Q2: Can this patent be challenged for validity?
Yes, through third-party proceedings such as inter partes reviews, challenging its novelty or non-obviousness based on prior disclosures or scientific literature.

Q3: What are the implications of the use claims within this patent?
Use claims protect therapeutic methods, expanding the patent’s scope into medical applications, and potentially blocking off-label uses or similar therapies.

Q4: How does this patent influence licensing strategies?
Its broad claims may attract licensing opportunities from competitors, research entities, or biosimilar developers seeking rights to specific chemical classes or indications.

Q5: What should companies consider before designing around this patent?
They should analyze the chemical scope to determine if structurally non-infringing analogs are viable and whether alternative mechanisms or targets can avoid infringement altogether.


References

  1. U.S. Patent No. 9,522,188.
  2. Patent landscape analyses and prior art references related to the chemical class and therapeutic indications.

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Drugs Protected by US Patent 9,522,188

Applicant Tradename Generic Name Dosage NDA Approval Date TE Type RLD RS Patent No. Patent Expiration Product Substance Delist Req. Patented / Exclusive Use Submissiondate
Bdsi BUNAVAIL buprenorphine hydrochloride; naloxone hydrochloride FILM;BUCCAL 205637-001 Jun 6, 2014 DISCN Yes No ⤷  Get Started Free ⤷  Get Started Free Y ⤷  Get Started Free
Bdsi BUNAVAIL buprenorphine hydrochloride; naloxone hydrochloride FILM;BUCCAL 205637-002 Jun 6, 2014 DISCN Yes No ⤷  Get Started Free ⤷  Get Started Free Y ⤷  Get Started Free
Bdsi BUNAVAIL buprenorphine hydrochloride; naloxone hydrochloride FILM;BUCCAL 205637-003 Jun 6, 2014 DISCN Yes No ⤷  Get Started Free ⤷  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

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