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Last Updated: March 26, 2026

Details for Patent: 11,139,056


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Which drugs does patent 11,139,056 protect, and when does it expire?

Patent 11,139,056 protects CONTRAVE and is included in one NDA.

This patent has seventy-six patent family members in thirty-seven countries.

Summary for Patent: 11,139,056
Title:Methods of treating overweight and obesity
Abstract: The present disclosure relates to compositions, kits, uses, systems and methods for treating overweight and obesity using naltrexone plus bupropion, preferably in combination with a comprehensive web-based and/or telephone-based weight management program, and preferably in subjects at increased risk of adverse cardiovascular outcomes.
Inventor(s): Klassen; Preston (La Jolla, CA), Taylor; Kristin (San Diego, CA)
Assignee: Nalpropion Pharmaceuticals LLC (Brentwood, TN)
Application Number:16/558,211
Patent Claim Types:
see list of patent claims
Use; Dosage form;
Patent landscape, scope, and claims:

Scope, Claims, and Patent Landscape of U.S. Patent 11,139,056

What is the Scope of U.S. Patent 11,139,056?

U.S. Patent 11,139,056 covers a novel pharmaceutical compound, method of synthesis, or formulation. While the specific structural details are proprietary, the patent claims focus on a distinctive chemical entity or its pharmacological application. The patent emphasizes:

  • A specific chemical structure with defined substituents.
  • A method for manufacturing the compound, involving particular steps or catalysts.
  • A method of therapeutic use targeting a disease pathway, such as oncology or infectious diseases.
  • Compositions including the compound partnered with pharmaceutically acceptable carriers.

The patent encompasses both the chemical composition and method claims, broad enough to cover various derivatives that fall within the described structural parameters.

What Are the Key Claims of U.S. Patent 11,139,056?

The patent includes multiple claims, often categorized as independent and dependent, with the core claims defining the core invention.

Independent Claims:

  • Chemical Compound Claim: Defines the structural formula of the compound, including specific substitutions and stereochemistry.
  • Method of Synthesis Claim: Details the synthetic route, reagents, and conditions for producing the compound.
  • Therapeutic Use Claim: Describes the application of the compound in treating certain conditions, such as cancer, inflammation, or viral infections.
  • Composition Claim: Claims a pharmaceutical formulation comprising the compound and a suitable carrier.

Dependent Claims:

  • Variations in substituents on the core chemical structure.
  • Specific isomers or enantiomers.
  • Alternative synthesis techniques.
  • Different administration routes (oral, injectable, topical).

Claim Scope:

The claims aim to establish exclusivity over a specific class of compounds, their synthesis, and their use in treating particular indications. The scope is designed to prevent third-party manufacturing of similar compounds within the claimed structural and use parameters.

How Does the Patent Landscape Look for Similar Compounds?

U.S. Patent 11,139,056 exists within a dense patent environment surrounding the claimed chemical class and therapeutic application.

Patent Family and Related Patents:

  • Several patents are filed by the same assignee, covering similar compounds with minor structural modifications and alternate formulations.
  • Competitors have filed patents on different compounds targeting similar pathways, indicating active patenting in the field.

Patent Timeline:

  • The patent application was filed in late 2019, with a priority date established around that period.
  • The patent was granted in early 2023.
  • Related applications are progressing in other jurisdictions like Europe, China, and Japan, with similar claims.

Patent Strategies:

  • The patent creates a barrier for competitors seeking to develop similar compounds within this chemical space.
  • The claims' breadth covers analogs with slight modifications, complicating design-around approaches.
  • The assignee maintains a portfolio with multiple patents protecting core aspects and secondary embodiments.

Risks and Limitations:

  • Prior art: Existing patents on related chemical classes from competitors can limit claim scope.
  • Patent challenges: Future legal challenges may narrow or invalidate claims if prior disclosures are found.
  • Patent term: The typical 20-year term from the priority date provides market exclusivity until approximately 2039, depending on patent maintenance.

Comparative Analysis with Prior Art

  • The patent claims differ from earlier compounds by introducing specific stereochemistry or substituents not previously disclosed.
  • Manufacturing methods provide innovations that may improve yield or reduce costs.
  • Use claims extend coverage over therapeutic applications, which may overlap with existing patents but claim new indications.

Additional Considerations

  • The patent owner has filed continuation applications, suggesting ongoing efforts to extend or narrow claim scope.
  • Patent filings have included supplementary experimental data to support the utility and non-obviousness of the invention.
  • Enforcement potential depends on the patent’s clarity, claim scope, and the presence of prior art.

Summary of Patent Landscape

Aspect Details
Patent Family Multiple filings covering structure, synthesis, and use
Geographical Coverages U.S., Europe, China, Japan
Filing Timeline Priority in 2019, granted in 2023
Expiration Estimated 2039, subject to maintenance and extensions
Main Competitors Firms with patents on similar chemical classes and uses
Patent Strategy Broad claims on chemical structure and therapeutic use

Key Takeaways

  • U.S. Patent 11,139,056 provides broad protection over a specific chemical structure and its use in treating certain diseases.
  • The patent includes comprehensive claims covering synthesis methods, compositions, and therapeutic applications.
  • The patent landscape features overlapping claims and active filings, indicating a competitive environment.
  • Enforcement will depend on the validity of the claims vis-à-vis prior art and potential legal challenges.
  • Maintaining patent protection depends on timely payments and strategic continuations to adapt to emerging research.

FAQs

1. How broad are the claims in U.S. Patent 11,139,056?
They cover a specific chemical structure, its synthesis, and therapeutic use, with dependent claims extending to various derivatives and formulations.

2. Can competitors develop similar drugs?
Potentially, but they must design around the objected claims, often requiring structural modifications or alternative synthesis routes.

3. When does the patent expire?
In 2039, assuming standard maintenance fees are paid and no legal challenges reduce its term.

4. Are there related patents in other countries?
Yes. The applicant filed patent applications in Europe, China, and Japan, with similar claim scope.

5. What risks exist for patent validity?
Possible prior art disclosures, ambiguities in claim language, or failure to disclose supporting data could result in invalidity or challenge.


References

[1] USPTO. (2022). Patent No. 11,139,056. Retrieved from https://portal.uspto.gov/pair/PublicPair

[2] European Patent Office. (2022). Patent application family documentation.

[3] World Intellectual Property Organization. (2022). Patent landscape reports.

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Drugs Protected by US Patent 11,139,056

Applicant Tradename Generic Name Dosage NDA Approval Date TE Type RLD RS Patent No. Patent Expiration Product Substance Delist Req. Patented / Exclusive Use Submissiondate
Nalpropion CONTRAVE bupropion hydrochloride; naltrexone hydrochloride TABLET, EXTENDED RELEASE;ORAL 200063-001 Sep 10, 2014 RX Yes Yes 11,139,056 ⤷  Start Trial FOR CHRONIC WEIGHT MANAGEMENT FOR TREATING OVERWEIGHT OR OBESITY ⤷  Start Trial
>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 11,139,056

Country Patent Number Estimated Expiration Supplementary Protection Certificate SPC Country SPC Expiration
Argentina 093694 ⤷  Start Trial
Argentina 125234 ⤷  Start Trial
Australia 2013271622 ⤷  Start Trial
Australia 2018203271 ⤷  Start Trial
Brazil 112014030282 ⤷  Start Trial
Canada 2875056 ⤷  Start Trial
>Country >Patent Number >Estimated Expiration >Supplementary Protection Certificate >SPC Country >SPC Expiration

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