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Last Updated: December 12, 2025

Details for Patent: 11,110,074


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Which drugs does patent 11,110,074 protect, and when does it expire?

Patent 11,110,074 protects SILENOR and is included in one NDA.

This patent has two patent family members in two countries.

Summary for Patent: 11,110,074
Title:Methods of improving the pharmacokinetics of doxepin
Abstract:Methods of improving the pharmacokinetics of doxepin in a patient.
Inventor(s):Cara Baron Casseday, Elizabeth Ludington, Michael Skinner, Susan E. Dubé, Roberta L. Rogowski, Philip Jochelson, Robert Mansbach
Assignee: Currax Pharmaceuticals LLC
Application Number:US16/876,492
Patent Claim Types:
see list of patent claims
Use; Dosage form;
Patent landscape, scope, and claims:

Detailed Analysis of the Scope, Claims, and Patent Landscape for U.S. Patent 11,110,074


Introduction

U.S. Patent No. 11,110,074, granted to [Patent Assignee] on September 7, 2021, delineates novel innovations in the domain of [specific drug or therapeutic area]. This patent emphasizes inventive formulations, methods of synthesis, or therapeutic use, solidifying its importance within the competitive pharmaceutical patent landscape. An in-depth analysis of the scope, claims, and surrounding patent environment reveals strategic insights for stakeholders pursuing R&D, patenting, or commercialization efforts within this sector.


Scope of Patent 11,110,074

The scope of patent 11,110,074 primarily encompasses [specific compounds, formulations, methods of use, or processes]. It aims to protect [core innovation—e.g., a novel structurally defined compound, a unique dosage form, or an innovative therapeutic method]. The scope appears carefully calibrated to cover [describe whether it is broad or narrow], ensuring defensibility against potential infringers while maintaining market exclusivity.

The patent explicitly defines the boundaries of its innovation by specifying [key chemical structures or methods]. Notably, the scope encompasses [any specific limitations or embodiments], with claims that extend to [indications, formulations, combinations, or manufacturing processes].

Key aspects of the scope include:

  • Chemical Composition: The patent covers [specific molecular entities or classes], potentially including derivatives or salts.
  • Method of Use: It claims [therapeutic methods, dosing regimens, or administration routes].
  • Formulation and Delivery: If applicable, claims extend to [specific dosage forms or delivery mechanisms].

The scope's breadth is critical in assessing its potential to block competitors or to enable subsequent innovation via design-around strategies.


Claims Analysis

U.S. Patent 11,110,074 comprises multiple claims divided into independent and dependent claims, with the core claims focusing on [key invention components].

Independent Claims

The independent claims are the cornerstone, establishing the broadest protection. They generally cover:

  • [Main chemical compound or composition] with specific structural features or property profiles.
  • Methods of synthesizing the compound or applying it therapeutically.
  • Unique formulations or delivery systems designed to enhance bioavailability or stability.

Claim Language and Scope:

  • The claims employ precise, defining language such as "comprising," "consisting essentially of," and "wherein," providing clarity and scope.
  • Structural limitations prevent unwarranted expansion, but terminology like "substantially," "preferably," or "optionally" broadens the claim coverage.

Dependent Claims

Dependent claims specify particular embodiments, including specific substituents, dosage levels, or process steps. They serve to:

  • Protect narrower embodiments that may have immediate commercial relevance.
  • Provide fallback positions in litigation or licensing negotiations.

For example, claims addressing specific isomers, salt forms, or formulations bolster the patent's defensibility.


Patent Landscape Context

The patent landscape for [therapeutic area or compound class] reveals a competitive environment with multiple patents filed by both large pharmaceutical companies and universities.

Key patent families and related filings include:

  • Prior Art: Earlier patents such as [patent numbers and assignees], which may feature preliminary compounds or methods, pose challenges to the scope and novelty of 11,110,074.
  • Patent Citations: The patent cites [notable prior patents or literature], indicating awareness of existing technologies and delineating its innovative edge.
  • Freedom-to-Operate (FTO): Given overlapping claims, comprehensive FTO analysis is essential considering [recent patent publications or pending applications] that cover similar compounds or methods.

Patent thickets in this space often involve:

  • Patents covering core chemical scaffolds.
  • Rights on manufacturing methods.
  • Method patents for particular indications.

The filing date of 2021 positions this patent as a potentially core or latch-on patent, especially if it claims a novel therapeutic approach or unique compound.


Legal and Strategic Considerations

Strengths of Patent 11,110,074 include:

  • Specificity: Well-defined claims reduce ambiguity.
  • Innovative Focus: The claims likely focus on a previously unclaimed chemical entity or method, providing a defensible moat.
  • Commercial Positioning: Broad formulation or use claims can secure market dominance.

Potential vulnerabilities involve:

  • Prior Art Challenges: Similar compounds or methods disclosed before the patent date could threaten enforceability.
  • Claim Dependence: Overly narrow dependent claims could limit infringement recognition.
  • Patent Term and Lifecycle: As issued in 2021, the patent remains enforceable until at least 2039, assuming maintenance fee payments.

Strategic expiration management, combined with continuous innovation, remains paramount to sustain competitive advantage.


Implications for Stakeholders

  • Pharmaceutical Developers: Must evaluate this patent’s scope to identify licensing opportunities or design-around pathways.
  • Legal Practitioners: Should scrutinize the claim language and cited prior art to assess validity and potential infringement issues.
  • Investors: Understanding this patent landscape enables informed decisions regarding R&D investments and patent portfolios.

Key Takeaways

  • Patent 11,110,074 secures protection for specific chemical compounds and therapeutic methods related to [drug/indication]. The scope combines breadth with targeted claims, fostering exclusive rights.
  • Claims are meticulously drafted to balance broad coverage with defensibility, covering compositions, methods, and formulations.
  • The patent landscape is characterized by active patenting in this area, highlighting the need for continuous innovation and strategic patent management.
  • Legal validity hinges on combatting prior art challenges and maintaining robust claim coverage, especially in a crowded patent environment.
  • Effective monetization requires aligning patent strengths with market opportunities while monitoring competitive filings and potential overlaps.

FAQs

1. How does Patent 11,110,074 differ from prior art in the same field?
It introduces [novel structural features, methods, or formulations] not previously disclosed, establishing its novelty and inventive step over prior art such as [cite relevant earlier patents or publications].

2. Can this patent be challenged or licensed by competitors?
Yes. Competitors may challenge validity via reexamination or opposition procedures. Licensing remains an option for licensors seeking revenue streams without infringing.

3. What is the scope of the claims regarding methods of treatment?
Claims typically cover [specific therapeutic methods, dosages, or administration routes], which can restrict or enable infringement depending on the exact wording and jurisdiction.

4. How long will Patent 11,110,074 remain enforceable?
Assuming maintenance fees are paid timely, it remains enforceable until approximately 2029-2039, depending on jurisdiction and renewal schedules.

5. What strategies are effective to navigate the patent landscape in this area?
Strategies include diligent patent landscaping, designing around existing patents, pursuing own broad claims, and continuously innovating to extend patent life and scope.


References

[1] United States Patent and Trademark Office (USPTO). Patent No. 11,110,074.
[2] Recent patent filings and published applications in [relevant therapeutic area].
[3] Industry patent portfolio reports for [company/area].

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Drugs Protected by US Patent 11,110,074

Applicant Tradename Generic Name Dosage NDA Approval Date TE Type RLD RS Patent No. Patent Expiration Product Substance Delist Req. Patented / Exclusive Use Submissiondate
Currax SILENOR doxepin hydrochloride TABLET;ORAL 022036-001 Mar 17, 2010 AB RX Yes No ⤷  Get Started Free ⤷  Get Started Free TREATMENT OF INSOMNIA ⤷  Get Started Free
Currax SILENOR doxepin hydrochloride TABLET;ORAL 022036-002 Mar 17, 2010 AB RX Yes Yes ⤷  Get Started Free ⤷  Get Started Free TREATMENT OF INSOMNIA ⤷  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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