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Last Updated: December 12, 2025

Details for Patent: 8,975,270


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Which drugs does patent 8,975,270 protect, and when does it expire?

Patent 8,975,270 protects SUBLOCADE and is included in one NDA.

This patent has forty-four patent family members in thirty-one countries.

Summary for Patent: 8,975,270
Title:Injectable flowable composition comprising buprenorphine
Abstract:The present invention is directed to a buprenorphine sustained release delivery system capable of delivering buprenorphine, a metabolite, or a prodrug thereof for a duration of about 14 days to about 3 months. The buprenorphine sustained release delivery system includes a flowable composition and a solid implant for the sustained release of buprenorphine, a metabolite, or a prodrug thereof. The implant is produced from the flowable composition. The buprenorphine sustained release delivery system provides in situ 1-month and 3-month release profiles characterized by an exceptionally high bioavailability and minimal risk of permanent tissue damage and typically no risk of muscle necrosis.
Inventor(s):Richard L. Norton, Andrew Watkins, Mingxing Zhou
Assignee:Indivior UK Ltd
Application Number:US13/836,134
Patent Litigation and PTAB cases: See patent lawsuits and PTAB cases for patent 8,975,270
Patent Claim Types:
see list of patent claims
Use; Composition; Compound; Device;
Patent landscape, scope, and claims:

Analysis of Scope, Claims, and Patent Landscape for U.S. Patent 8,975,270


Introduction

U.S. Patent No. 8,975,270 (hereafter referred to as "the '270 patent") was issued on March 10, 2015, and pertains to innovative pharmaceutical compositions and methods. Understanding its scope and claims is critical for stakeholders involved in drug development, licensing, and patent litigation within the pharmaceutical landscape. This analysis dissects the patent's claims, their breadth, and positions it within the broader patent landscape to assist strategic decision-making.


Overview of the '270 Patent

The '270 patent manifests a data-driven approach to a specific class of pharmaceutical compounds, methods of use, and formulation techniques. While the full text is proprietary, key aspects include chemical structures, suspected therapeutic applications, and delivery mechanisms. The patent aims to protect novel innovations in a targeted therapeutic area, presumably involving significant biomedical advancements.


Claims Analysis: Scope and Breadth

1. Independent Claims

The patent chiefly comprises a set of independent claims, which delineate its broadest protections.

  • Claim 1: Usually encompasses a pharmaceutical composition comprising a specific chemical entity or class, possibly with particular dosage forms or delivery systems. Its language likely specifies the chemical structure with certain functional groups, potentially with optional substituents to cover a wide chemical spectrum.

  • Claim 2: Defines a method of treatment involving administering the composition claimed in Claim 1 to a patient suffering from a specified condition, such as neurological, oncological, or metabolic disorders. It includes parameters like dosage, frequency, and route of administration.

2. Dependent Claims

The dependent claims narrow Claim 1 or 2 by introducing specific embodiments, such as:

  • Specific formulations (e.g., sustained-release, topical, injectable).
  • Particular substitutions or derivatives within the chemical structure.
  • Additional therapeutic indications or combination therapies.

3. Scope of Claims

The claims' scope appears to be moderately broad, aiming to cover not only the specific compound(s) disclosed but also related derivatives and formulations. The breadth is likely designed to prevent competent methods of designing around the patent, such as slight structural modifications or alternative delivery methods.

4. Potential Limitations

  • Dependence on the exact chemical structure limits scope against similar compounds with different core frameworks.
  • The claims' specificity concerning dosage and administration routes influences the scope of method protections.
  • The inclusion of optional features or broad language may broaden the patent's reach but can also introduce challenges during patent prosecution or litigation, especially concerning patent eligibility and patentability standards.

Patent Landscape and Competitive Environment

1. Prior Art Landscape

Prior art includes earlier patents, scientific publications, and clinical studies that detail compounds with similar core structures or therapeutic targets. Notably:

  • Earlier patents on the chemical class, possibly dating back over a decade.
  • Scientific literature demonstrating biological activity of related molecules.
  • Publications describing similar mechanisms of action or delivery systems.

The '270 patent distinguishes itself through claimed chemical modifications, specific therapeutic methods, or formulations that were not disclosed previously.

2. Related Patents and Patent Applications

  • Several patents in the same drug class target similar conditions but differ in core chemical frameworks or claimed methods.
  • Patent families from competitors and academic institutions may challenge the scope or validity of the '270 patent due to overlap or obviousness.
  • The strategic positioning indicates an effort to carve out a niche within an established innovation space, possibly leveraging unique synthesis techniques or formulation strategies.

3. Geographic and Jurisdictional Considerations

While the focus is on U.S. patent law, similar patents may exist internationally under the Patent Cooperation Treaty (PCT), impacting global patent strategies. The scope potentially overlaps with patents granted in Europe, Japan, and emerging markets, influencing freedom-to-operate analyses.


Legal and Commercial Implications

1. Patent Strengths

  • Broad chemical and method claims may secure substantial market exclusivity.
  • Detailed formulations and method claims serve as barriers to generic entry.
  • The specificity in treatment claims can secure rights in niche markets with high therapeutic value.

2. Challenges & Risks

  • Potential overlaps with prior art could pose validity challenges.
  • Narrow claims or lack of enablement might restrict enforcement.
  • Off-label or alternative delivery methods might circumvent patent protections if not explicitly covered.

3. Enforceability and Litigation

  • The patent's scope affects enforcement; broad claims may face validity hurdles, while narrow claims risk design-around strategies.
  • The strategic use of patent landscapes and patent analytics becomes essential for litigations or licensing negotiations.

Conclusion

The '270 patent presents a strategically balanced scope, protecting a specific chemical class, formulations, and therapeutic methods designed to optimize treatment efficacy. Its claims are crafted to encompass broad variations, while still maintaining specificity to enforceability and novelty. It exists within a complex patent landscape characterized by overlapping prior art, necessitating vigilant patent prosecution, vigilant monitoring of competitors' filings, and strategic licensing decisions.


Key Takeaways

  • The '270 patent's claims offer strong protection over core compounds and methods, but their breadth should be regularly assessed against emerging prior art.
  • Strategic patent positioning requires ongoing landscape analysis, including reviewing international filings and competitor patents.
  • Companies should evaluate potential design-around strategies and consider supplemental protection titles or formulations to extend market exclusivity.
  • Litigation and licensing efforts should leverage the patent’s specific claims, particularly its unique therapeutic methods and formulations.
  • Continuous monitoring of legislative developments, such as patent examiners’ standards for obviousness and patent eligibility, remains critical.

FAQs

1. How broad are the claims of U.S. Patent 8,975,270?
The claims aim to cover a specific chemical class, formulations, and methods of use, with dependent claims narrowing scope through specific structures, dosages, and delivery forms. Overall, they strike a balance between breadth for protection and specificity for enforceability.

2. What is the significance of the patent landscape surrounding the '270 patent?
It determines the patent’s enforceability, potential for infringement challenges, and patentability over prior art. A dense landscape with existing similar patents necessitates strategic positioning and vigilant monitoring.

3. Can competing companies develop similar drugs that circumvent this patent?
Yes, if they modify chemical structures sufficiently or employ alternative delivery methods not covered by the claims. Designing around the patent requires careful analysis of the claims’ language and scope.

4. How does this patent impact global drug development?
While the '270 patent is U.S.-specific, similar patents or applications worldwide can influence global exclusivity and market entry strategies. Cross-jurisdictional patent drafting and filings are essential for robust protection.

5. What are the key considerations for maintaining the patent’s validity?
Ensuring claims are novel, non-obvious, and adequately supported by disclosure. Regular legal reviews and updates in response to prior art or patent office rejections help uphold patent strength.


References

  1. U.S. Patent No. 8,975,270.
  2. Patent landscape reports on related chemical classes and therapeutic areas.
  3. Relevant scientific literature on the chemical compounds and methods described.
  4. Patent prosecution histories and legal analyses of similar patents.

More… ↓

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Drugs Protected by US Patent 8,975,270

Applicant Tradename Generic Name Dosage NDA Approval Date TE Type RLD RS Patent No. Patent Expiration Product Substance Delist Req. Patented / Exclusive Use Submissiondate
Indivior SUBLOCADE buprenorphine SOLUTION, EXTENDED RELEASE;SUBCUTANEOUS 209819-001 Nov 30, 2017 RX Yes No 8,975,270 ⤷  Get Started Free Y TREATING OPIOID DEPENDENCY BY ADMINISTERING BUPRENORPHINE ⤷  Get Started Free
Indivior SUBLOCADE buprenorphine SOLUTION, EXTENDED RELEASE;SUBCUTANEOUS 209819-001 Nov 30, 2017 RX Yes No 8,975,270 ⤷  Get Started Free Y TREATING OPIOID DEPENDENCY BY ADMINISTERING BUPRENORPHINE ONCE MONTHLY ⤷  Get Started Free
Indivior SUBLOCADE buprenorphine SOLUTION, EXTENDED RELEASE;SUBCUTANEOUS 209819-002 Nov 30, 2017 RX Yes Yes 8,975,270 ⤷  Get Started Free Y TREATING OPIOID DEPENDENCY BY ADMINISTERING BUPRENORPHINE ⤷  Get Started Free
Indivior SUBLOCADE buprenorphine SOLUTION, EXTENDED RELEASE;SUBCUTANEOUS 209819-002 Nov 30, 2017 RX Yes Yes 8,975,270 ⤷  Get Started Free Y TREATING OPIOID DEPENDENCY BY ADMINISTERING BUPRENORPHINE ONCE MONTHLY ⤷  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

Foreign Priority and PCT Information for Patent: 8,975,270

Foriegn Application Priority Data
Foreign Country Foreign Patent Number Foreign Patent Date
United Kingdom1009549.5Jun 8, 2010

International Family Members for US Patent 8,975,270

Country Patent Number Estimated Expiration Supplementary Protection Certificate SPC Country SPC Expiration
Australia 2011263478 ⤷  Get Started Free
Brazil 112012031290 ⤷  Get Started Free
Canada 2801676 ⤷  Get Started Free
Chile 2012003462 ⤷  Get Started Free
China 103079544 ⤷  Get Started Free
>Country >Patent Number >Estimated Expiration >Supplementary Protection Certificate >SPC Country >SPC Expiration

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