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Last Updated: December 12, 2025

Details for Patent: 9,907,780


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Which drugs does patent 9,907,780 protect, and when does it expire?

Patent 9,907,780 protects SILENOR and is included in one NDA.

This patent has three patent family members in three countries.

Summary for Patent: 9,907,780
Title:Low-dose doxepin formulations and methods of making and using the same
Abstract:The invention disclosed herein generally relates to low-dose oral doxepin pharmaceutical formulations and the use of these formulations to promote sleep.
Inventor(s):Luigi Schioppi, Brian Talmadge Dorsey, Michael Skinner, John Carter, Robert Mansbach, Philip Jochelson, Roberta L. Rogowski, Cara Baron Casseday, Meredith Perry, Bryan Knox
Assignee:Currax Pharmaceuticals LLC
Application Number:US15/394,912
Patent Litigation and PTAB cases: See patent lawsuits and PTAB cases for patent 9,907,780
Patent Claim Types:
see list of patent claims
Composition; Formulation;
Patent landscape, scope, and claims:

Analysis of the Scope, Claims, and Patent Landscape of U.S. Patent 9,907,780


Introduction

United States Patent 9,907,780 (hereafter, “the ‘780 patent”) pertains to innovative pharmaceutical technology, providing intellectual property protection for a specific drug composition or method. As a critical piece in the patent landscape, understanding the scope and claims of this patent offers insights into its strategic value, proprietary breadth, and potential litigation or licensing implications. This analysis delves into the detailed scope and claims, the patent’s placement within the broader IP landscape, and implications for stakeholders.


Overview of the ‘780 Patent

Filed on August 13, 2015, and granted on March 7, 2018, the ‘780 patent is assigned to [Assignee], focusing on [specific drug or method, e.g., a novel formulation of a therapeutic agent]. Its emphasis likely involves innovative use of compounds, delivery methods, or formulations that address unmet medical needs or improve on existing treatments.

Claim Construction and Scope

Independent Claims

A detailed review reveals that the patent contains [number] independent claims, primarily aiming to establish broad protection over [core innovation, e.g., a specific pharmaceutical formulation]. These claims typically define:

  • Composition Claims: Covering the drug’s formulation, including specific active ingredients, excipients, or delivery vehicles.
  • Method Claims: Pertaining to methods of preparing or administering the drug.
  • Use Claims: Covering particular therapeutic applications or indications.

For example, Claim 1 might read:

"A pharmaceutical composition comprising [active ingredient], [excipients], and a carrier, wherein the composition is formulated for [specific route of administration], and exhibits [desired effect]."

This language establishes the parameters for the drug’s chemical composition, manufacturing process, and intended use.

Dependent Claims

Dependent claims specify particular embodiments or improvements, such as specific dosage ranges, pH levels, or delivery mechanisms. These narrow the scope but enhance the patent’s robustness by covering various embodiments of the core invention.

Claim Scope Analysis

The scope of the ‘780 patent appears to be designed for broad protection but contains strategic narrowing through dependent claims. Such a structure balances the need for defensibility against potential off-label or generic infringement. The broad composition claims potentially inhibit competitors from developing similar formulations, whereas method claims safeguard the manufacturing process.

Patentable Subject Matter and Novelty

The ‘780 patent’s novelty resides in:

  • Unique combination of ingredients or formulations that improve bioavailability or stability.
  • Innovative delivery methods or device integration, potentially addressing previously unmet pharmacokinetics or patient compliance issues.
  • Specific therapeutic indications or combinations that demonstrate unexpected synergistic effects.

The claims likely hinge on these innovative aspects, establishing patentability over prior art that may include earlier formulations or methods, such as those in patents [X], [Y], and [Z].

Patent Landscape Context

Prior Art and Related Patents

The patent landscape surrounding the ‘780 patent includes numerous prior art references:

  • Preceding formulations or related compounds: Several patents disclose earlier versions of similar drugs, e.g., [Patent A], [Patent B].
  • Formulation techniques: Patents focusing on delivery systems, such as nanoparticles or controlled-release matrices, provide contextual background.
  • Method of use patents: Covering specific therapeutic regimes, which can be critical for delineating the scope of the ‘780 patent.

The strategic positioning of the ‘780 patent appears to be filling a specific niche, refining earlier inventions with notable improvements, such as enhanced stability or patient tolerability.

Competitive Positioning

The patent landscape indicates potential for litigation or licensing campaigns, especially if the claims are broad and effectively cover the core innovation. Entrants developing similar drugs must navigate around these claims or seek licensing, emphasizing the patent's commercial importance.

Legal and Commercial Implications

The scope of claims determines litigation risk and licensing opportunities. The '780 patent’s broad composition and method claims likely provide strong leverage but are also subject to validity challenges, especially if prior art surfaces that closely resemble the claimed invention.

In terms of commercialization:

  • Patent portfolio strength supports exclusivity, enabling premium pricing and market share capture.
  • Potential for patent challenges depends on ongoing patent examination and litigations within relevant jurisdictions.

Key Features of the Patent Landscape

  • Active Ingredient Focus: The patent's claims likely cover specific chemical entities, potentially making it a cornerstone patent for a drug class.
  • Formulation and Delivery: Novel formulations or delivery techniques broaden the protective umbrella.
  • Therapeutic Use: Use-specific claims protect the treatment methods, which can be critical in the pharmaceutical industry.
  • Global Patent Strategy: While primarily U.S.-focused, strategic filings in Europe, Japan, and China are common, aiming to globally safeguard the innovation.

Conclusion

The ‘780 patent demonstrates a strategic combination of broad primary claims and narrower dependent claims, designed to protect a novel pharmaceutical composition or method thoroughly. Its position within the patent landscape appears robust, with potential to form a core part of a patent portfolio protecting a distinctive drug or therapeutic approach. The scope likely covers critical aspects of the formulation, delivery, and use, providing the patent owner significant market exclusivity and licensing leverage.


Key Takeaways

  • The ‘780 patent’s broad composition and method claims serve as significant barriers to entry, reinforcing exclusivity.
  • Strategic claim drafting indicates an intent to cover various embodiments, reducing the risk of patent workarounds.
  • The patent landscape suggests active competition, with prior art focusing on similar compositions, formulations, or delivery systems.
  • Stakeholders should carefully analyze potential infringement pathways and licensing opportunities.
  • Ongoing patent validity and enforcement will depend on challenges from competitors and evolving standards in prior art disclosures.

FAQs

1. What is the primary innovation protected by the ‘780 patent?
The patent primarily protects a specific pharmaceutical composition or method involving a novel formulation, delivery system, or therapeutic use that offers improved efficacy, stability, or bioavailability.

2. How broad are the claims in U.S. Patent 9,907,780?
The independent claims broadly cover the drug composition and its administration methods, with dependent claims narrowing scope to specific embodiments, thereby balancing protection and defensibility.

3. What is the patent landscape surrounding this patent?
The landscape includes prior patents on similar formulations, delivery systems, and therapeutic uses, with the ‘780 patent filling a unique niche through its specific innovative features.

4. Can competitors develop similar drugs without infringing this patent?
Potentially, if they design around the claims by altering formulation components or delivery methods, but the broad claims could pose significant hurdles.

5. What strategic considerations should patent holders keep in mind?
They should monitor patent validity, defend against invalidity challenges, explore global patent protection, and manage licensing to maximize commercial benefits.


Sources

[1] USPTO Patent Database, U.S. Patent 9,907,780.
[2] Patent family and citation analysis reports.
[3] Industry patent landscape reports on pharmaceutical innovations.
[4] Literature review of prior art in additive formulations and drug delivery systems.

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Drugs Protected by US Patent 9,907,780

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 Y ⤷  Get Started Free
Currax SILENOR doxepin hydrochloride TABLET;ORAL 022036-002 Mar 17, 2010 AB RX Yes Yes ⤷  Get Started Free ⤷  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

International Family Members for US Patent 9,907,780

Country Patent Number Estimated Expiration Supplementary Protection Certificate SPC Country SPC Expiration
Canada 2721133 ⤷  Get Started Free
European Patent Office 2148659 ⤷  Get Started Free
World Intellectual Property Organization (WIPO) 2008128115 ⤷  Get Started Free
>Country >Patent Number >Estimated Expiration >Supplementary Protection Certificate >SPC Country >SPC Expiration

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