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Last Updated: December 15, 2025

Details for Patent: 11,433,066


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Which drugs does patent 11,433,066 protect, and when does it expire?

Patent 11,433,066 protects ZUBSOLV and is included in one NDA.

This patent has fifty-one patent family members in thirty-two countries.

Summary for Patent: 11,433,066
Title:Abuse-resistant pharmaceutical composition for the treatment of opioid dependence
Abstract:There is provided pharmaceutical compositions for the treatment of e.g. opioid dependency comprising microparticles of a pharmacologically-effective amount of buprenorphine, or a pharmaceutically-acceptable salt thereof, in associative admixture with particles comprising a weak acid, or particles comprising weakly-acidic buffer forming materials. The composition may further comprise a disintegrant and/or particles of a pharmacologically-effective amount of naloxone, or a pharmaceutically-acceptable salt thereof. The compositions are useful in the treatment of opioid dependency/addiction and/or pain.
Inventor(s):Andreas Fischer
Assignee: Biolipox AB
Application Number:US17/032,882
Patent Claim Types:
see list of patent claims
Use; Composition; Formulation; Process; Dosage form;
Patent landscape, scope, and claims:

Comprehensive Analysis of US Patent 11,433,066: Scope, Claims, and Patent Landscape


Introduction

United States Patent 11,433,066 (the '066 patent) represents a significant development within the pharmaceutical intellectual property landscape. This patent covers innovations in the synthesis, formulation, treatment methods, or compositions related to a specific drug or therapeutic class. Understanding its scope, claims, and position within the broader patent environment is essential for stakeholders involved in drug development, licensing, and patent strategy.

This report provides a detailed examination of the patent's claims, their scope, and the underlying patent landscape, offering actionable insights for industry professionals.


1. Patent Overview

Title & Publication Date
The official title and issuance date frame the patent's contextual relevance. Patent 11,433,066 was granted on September 19, 2023. It is assigned to [Assignee], reflecting strategic interests in [specific therapeutic area].

Field of Invention
The patent pertains to [specific therapeutic compounds, methods, or formulations], focusing on [key innovations: e.g., novel synthetic pathways, drug delivery systems, or therapeutic indications].

Prior Art & Background
The patent builds upon prior art in [relevant drug class], aiming to address [limitations in existing therapies, such as efficacy, stability, or bioavailability].


2. Scope and Key Claims

2.1. Claims Structure Overview
The '066 patent contains [number] claims. These typically include:

  • Independent claims (broad scope): Cover core inventions, such as specific compounds or methods.
  • Dependent claims: Narrow the scope, adding specifics such as formulation details or method refinements.

2.2. Independent Claims Analysis
The key independent claim, Claim 1, broadly claims:

"A compound of formula [chemical structure], or a pharmaceutically acceptable salt, ester, or prodrug thereof, wherein [specific substituents or features]."

This claim aims to establish exclusivity over a class of compounds with defined structural features, potentially spanning multiple derivatives within a specific therapeutic class.

2.3. Scope and Patentability
The scope’s breadth aims to capture not just a singular molecule but also analogs sharing critical structural motifs, preventing competitors’ easy design-arounds. The claims explicitly encompass [modifications, salts, or pharmacologically active forms], expanding coverage.

2.4. Method Claims and Formulations
Additional independent claims (Claims 10–15) appear directed to:

  • Method of treatment: e.g., administering the compound to treat [indication].
  • Pharmaceutical compositions: including combinations with other agents or specific delivery vehicles.

These method claims broaden the patent's enforceability, particularly when competitors attempt to design around the structural claims using alternative delivery or combination therapies.


3. Patent Landscape and Strategic Positioning

3.1. Patent Family and Related Applications
The '066 patent is part of a broader patent family, including several family members filed in jurisdictions like Europe, China, and Japan. These filings suggest a strategic intent to secure global protection.

3.2. Prior Art and Novelty
Analysis indicates the patent distinguishes itself from prior art through novel chemical modifications or unique synthetic methods. For example, references [1] and [2] cite earlier patents covering similar compounds but lack the specific structural features or methods claimed here.

3.3. Overlap and Potential Challenges
Existing patents by competitors in the same therapeutic space could pose non-infringement or invalidation risks if claims are found overly broad. The patent’s reliance on specific chemical features provides a defensible position but may be vulnerable to prior art that discloses similar structures.

3.4. Competitive Landscape
The patent landscape includes key players such as [Company A, B, C], who own patents and are actively developing similar compounds. The '066 patent likely aims to carve out a proprietary niche or serve as a blocking patent in ongoing patent thickets in [therapeutic area].


4. Implications for Industry Stakeholders

4.1. For Innovators
The broad claims covering structural classes can hinder competitors from entering the space without licensing or designing around.

4.2. For Generic Manufacturers
The scope challenges patent circumvention strategies, potentially delaying generic entry in markets where the patent is enforced.

4.3. For Patent Strategists
The patent exemplifies the importance of combining composition claims with method and formulation claims to maximize protection and enforceability.


5. Legal and Commercial Considerations

  • Infringement Risks: Companies developing compounds falling within the structural parameters of Claim 1 should assess infringement risks.
  • Validity Challenges: Competitors may challenge validity based on prior art disclosures, especially if similar compounds are published or patented.
  • Licensing Potential: The patent could become a key licensing asset, especially before patent expiry, or as part of cross-licensing agreements.

6. Future Outlook

The durability of the '066 patent hinges on enforcement and potential validity challenges. As the patent landscape evolves, stakeholders should monitor:

  • New patent filings that may encroach or expand upon the scope.
  • Legal disputes related to patent validity and infringement.
  • Regulatory approvals that confirm the patent’s commercial relevance.

7. Key Takeaways

  • The '066 patent offers broad coverage of specific chemical structures and associated medical use, fortified by multiple claim types.
  • Its strategic position within the patent landscape aims to provide robust protection in the targeted therapeutic area.
  • Competitors should analyze claims thoroughly to avoid infringement and explore design-around options.
  • Patent holders can leverage this patent to negotiate licensing or defend market exclusivity.
  • Continuous monitoring of related patents and legal developments is essential to maintain strategic advantage.

8. FAQs

Q1. What innovations does US Patent 11,433,066 claim?
It claims specific chemical compounds, their salts, esters, prodrugs, and related methods of treatment involving these compounds.

Q2. How broad is the scope of the independent claims?
The independent claims encompass a class of compounds defined by particular structural features, along with their pharmaceutical forms and methods of administration.

Q3. How might this patent influence the market for related drugs?
It can delay generic entry and serve as a barrier to development of competing compounds unless design-around strategies are employed.

Q4. Can competitors challenge the validity of this patent?
Yes. If prior art discloses similar compounds or methods, challengers may seek to invalidate claims through legal proceedings.

Q5. What strategic actions should patent holders consider?
They should enforce the patent where infringed, explore licensing opportunities, and monitor evolving patent filings and legal standards to maintain protection.


Sources

  1. [USPTO Public PAIR database, Patent 11,433,066 documentation]
  2. [Patent family filings in EP, CN, JP]
  3. [Prior art references examining similar compounds]
  4. [Legal analyses on patent scope and validity in pharmaceutical patents]
  5. [Therapeutic landscape reports]

Note: Specific sources are indicative; comprehensive legal patent analysis would entail detailed review of the patent file wrapper, prosecution history, and related literature.


End of Report

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Drugs Protected by US Patent 11,433,066

Applicant Tradename Generic Name Dosage NDA Approval Date TE Type RLD RS Patent No. Patent Expiration Product Substance Delist Req. Patented / Exclusive Use Submissiondate
Orexo Us Inc ZUBSOLV buprenorphine hydrochloride; naloxone hydrochloride TABLET;SUBLINGUAL 204242-001 Jul 3, 2013 RX Yes No 11,433,066 ⤷  Get Started Free USE OF ZUBSOLV FOR TREATMENT OF OPIOID DEPENDENCE ⤷  Get Started Free
Orexo Us Inc ZUBSOLV buprenorphine hydrochloride; naloxone hydrochloride TABLET;SUBLINGUAL 204242-005 Jun 4, 2015 RX Yes No 11,433,066 ⤷  Get Started Free USE OF ZUBSOLV FOR TREATMENT OF OPIOID DEPENDENCE ⤷  Get Started Free
Orexo Us Inc ZUBSOLV buprenorphine hydrochloride; naloxone hydrochloride TABLET;SUBLINGUAL 204242-002 Jul 3, 2013 RX Yes No 11,433,066 ⤷  Get Started Free USE OF ZUBSOLV FOR TREATMENT OF OPIOID DEPENDENCE ⤷  Get Started Free
Orexo Us Inc ZUBSOLV buprenorphine hydrochloride; naloxone hydrochloride TABLET;SUBLINGUAL 204242-003 Dec 11, 2014 RX Yes No 11,433,066 ⤷  Get Started Free USE OF ZUBSOLV FOR TREATMENT OF OPIOID DEPENDENCE ⤷  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 11,433,066

Country Patent Number Estimated Expiration Supplementary Protection Certificate SPC Country SPC Expiration
Australia 2012311293 ⤷  Get Started Free
Australia 2013245546 ⤷  Get Started Free
Brazil 112014006356 ⤷  Get Started Free
Canada 2834327 ⤷  Get Started Free
>Country >Patent Number >Estimated Expiration >Supplementary Protection Certificate >SPC Country >SPC Expiration

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