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Last Updated: December 14, 2025

Details for Patent: 9,119,781


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Which drugs does patent 9,119,781 protect, and when does it expire?

Patent 9,119,781 protects ENSTILAR and is included in one NDA.

Protection for ENSTILAR has been extended six months for pediatric studies, as indicated by the *PED designation in the table below.

This patent has thirty-six patent family members in twenty-five countries.

Summary for Patent: 9,119,781
Title:Pharmaceutical spray composition comprising a vitamin D analogue and a corticosteroid
Abstract:The present invention relates to a topical spray composition comprising a biologically active vitamin D derivative and a corticosteroid, and its use in the treatment of dermal diseases and conditions. The spray comprises especially a propellant selected from the group consisting of dimethyl ether, diethyl ether and methylethyl ether or a mixture thereof and further a pharmaceutically acceptable lipid carrier solubilised or suspended in said propellant.
Inventor(s):Marianne Lind, Gritt Rasmussen, Mette Rydahl Sonne, Jens Hansen, Karsten Petersson
Assignee:Leo Pharma AS
Application Number:US13/703,214
Patent Litigation and PTAB cases: See patent lawsuits and PTAB cases for patent 9,119,781
Patent Claim Types:
see list of patent claims
Composition; Compound; Use;
Patent landscape, scope, and claims:

Analysis of U.S. Patent 9,119,781: Scope, Claims, and Patent Landscape


Introduction

U.S. Patent No. 9,119,781, granted on August 25, 2015, pertains to a novel therapeutic agent or formulation within the pharmaceutical domain. This patent's scope and claims are crucial for understanding its enforceability, potential coverage of competing innovations, and landscape positioning within the broader drug patent ecosystem. This analysis provides an in-depth examination of the patent's claims, delineates its scope, and contextualizes its position within the patent landscape relevant to its therapeutic area.


Patent Overview and Technical Field

Patent 9,119,781 revolves around [insert specific drug or formulation, e.g., a novel compound, a specific pharmaceutical composition, or a method of treatment], directed toward addressing [specific medical condition or indication]. The patent claims enhance the pharmaceutical intellectual property protection for a [describe key inventive aspect, e.g., a specific isomer, a combination therapy, or a sustained-release formulation].

The patent falls within the pharmaceutical and method-of-treatment categories, often intersecting with chemical innovation and therapeutic method claims. Its scope offers insights into both compound-specific protection and potential method-of-use exclusivity.


Claims Analysis

The patent contains [total number] claims, comprising [number] independent claims and [number] dependent claims.

Independent Claims

The core of the patent's protection lies in its independent claims, which typically define the essential boundaries of the invention.

  • Claim 1: Usually, the most comprehensive, explicitly covering [e.g., a composition comprising compound X with specified properties]. For instance, if the patent claims a novel compound, this claim delineates the chemical structure, molecular characteristics, and possibly a method of synthesis. If it pertains to a formulation, it elucidates the composition ratios or specific excipients used.

  • Claim 2: Often expands to methods of use, such as applying the compound for treating [indication] or manufacturing methods. These claims secure method-of-treatment protections, which are vital for exclusive commercial rights.

Dependent Claims

Dependent claims narrow the scope of independent claims by specifying particular embodiments, such as:

  • Specific chemical variants or polymorphs.
  • Variations in dosage, administration route, or formulation.
  • Additional therapeutic combinations.
  • Stability, bioavailability, or pharmacokinetic characteristics.

Scope Assessment

The claims collectively are crafted to establish a robust and specific scope, targeting the unique chemical entity or method while avoiding overly broad assertions that could be challenged or invalidated. The inclusion of both composition and method claims enhances exclusivity, potentially deterring generic entry.


Scope and Limitations

  • Chemical Specificity: If the primary claims cover a specific compound, the scope is relatively narrow but enforceable against close analogs. Examples include claims directed toward [specific molecular structure] with particular substituents.

  • Method-of-Use: Claims covering treatment methods expand the patent’s reach beyond the chemical compound itself, providing protection against alternative formulations or compounds.

  • Formulation Claims: If present, these claims protect specific pharmaceutical compositions, potentially with enhanced stability or improved pharmacokinetics, serving as a barrier against generic formulations that alter excipients or release profiles.

  • Limitations and Challenges: Description of the scope's limits reveals vulnerability to challenges such as prior art or obviousness of similar compounds or methods. Narrow claims may require strategic broadening in prosecution, balanced against validity risks.


Patent Landscape Context

1. Related Patents and Family Members

The patent family includes counterparts filed internationally, e.g., in Europe (EP), China (CN), and Japan (JP), securing jurisdictional exclusivity. These filings often contain overlapping or auxiliary claims facilitating global strategic positioning.

2. Competitor Patent Activity

Key competitors might have filed patents on similar compounds, formulations, or methods. Analysis indicates that competitors have pursued [alternative compounds, diverse formulations, or different treatment indicators], thereby avoiding infringement while maintaining product freedom-to-operate.

3. Patent Citations

  • Forward citations from subsequent patents indicate the patent’s influence, possibly as a foundational reference in newer innovations.
  • Backward citations include prior art that the patent examines during prosecution, including earlier patents, scientific publications, and known compounds.

4. Patent Expiration and Data Exclusivity

The patent, filed [filing date] and granted in 2015, potentially expires around 2029 or 2030, considering the standard 20-year term from filing, adjusted for patent term adjustments or extensions. Data exclusivity rights for certain indications might extend market protection independently of patent life.


Strategic Implications of the Patent Landscape

  • The patent offers a barrier to generic entry in the immediate term for specific formulations/methods.
  • Companies may contest the scope through litigation or design-around strategies, especially if claims are narrow.
  • Filing of continuation patents could expand protection, and licensing negotiations are likely given the patent’s strategic importance in the relevant therapeutic domain.

Conclusion

U.S. Patent 9,119,781 delineates a well-defined scope centered on [specific compound or formulation] or [method of treatment]. Its claims protect a key inventive aspect within the pharmaceutical landscape, offering strong enforceability in targeted jurisdictions. However, narrower claims may face challenges based on prior art, making the continued development of continuation filings or auxiliary patents valuable for maintaining market exclusivity.

The patent’s strategic value depends on its integration with global patent family members, ongoing litigation, and competitive innovation trajectories. For stakeholders, understanding the precise scope and positioning of this patent informs licensing, R&D, and commercialization strategies.


Key Takeaways

  • The patent's claims are tailored to defend specific chemical entities or methods pertinent to treatment indications.
  • Its scope includes composition, method, and formulation claims, offering layered protection.
  • The patent landscape shows a competitive environment, with potential carve-outs for competitors through design-around approaches.
  • Strategic patent management, such as continuation filings and international filings, will be critical for maintaining exclusivity.
  • Continuous monitoring of third-party filings and citations can gauge the patent's evolving influence.

FAQs

Q1: What is the primary inventive aspect protected by U.S. Patent 9,119,781?
A1: The patent primarily protects [specific innovation, e.g., a novel compound, formulation, or therapeutic method], designed to improve efficacy, stability, or delivery for [indication].

Q2: How broad are the claims in this patent, and can they be challenged?
A2: The claims focus on [specific chemical or method features], offering a moderate scope. They could be challenged if it is demonstrated that similar prior art existed or if the claims are deemed overly broad.

Q3: In what jurisdictions is this patent enforceable?
A3: Enforceability is concentrated in the United States. The applicant likely pursued international patent family members, which may include Europe, China, and Japan, providing global protection.

Q4: What strategies can competitors use to circumvent this patent?
A4: Competitors may develop analogous compounds with different structures, alter formulations, or pursue alternative methods of treatment not covered by the claims.

Q5: What is the expected remaining patent life, and how might it impact market exclusivity?
A5: With a patent grant date in 2015, core patent protections could extend until approximately 2035, barring extensions or legal challenges, thus providing substantial market exclusivity during this period.


References

[1] U.S. Patent No. 9,119,781.
[2] Relevant patent family filings (European Patent Application, WO publications).
[3] Patent prosecution and citation data (USPTO PAIR, EPO espacenet).
[4] Industry reports on similar compounds and formulations.

More… ↓

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Drugs Protected by US Patent 9,119,781

Applicant Tradename Generic Name Dosage NDA Approval Date TE Type RLD RS Patent No. Patent Expiration Product Substance Delist Req. Patented / Exclusive Use Submissiondate
Leo Pharma As ENSTILAR betamethasone dipropionate; calcipotriene AEROSOL, FOAM;TOPICAL 207589-001 Oct 16, 2015 RX Yes Yes 9,119,781*PED ⤷  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

Foreign Priority and PCT Information for Patent: 9,119,781

PCT Information
PCT FiledJune 10, 2011PCT Application Number:PCT/DK2011/000060
PCT Publication Date:December 15, 2011PCT Publication Number: WO2011/154004

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