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Last Updated: December 15, 2025

Details for Patent: 9,050,307


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Which drugs does patent 9,050,307 protect, and when does it expire?

Patent 9,050,307 protects THYQUIDITY and is included in one NDA.

This patent has eleven patent family members in eleven countries.

Summary for Patent: 9,050,307
Title:Method for the preparation of a levothyroxine solution
Abstract:Levothyroxine, also known as L-thyroxine, synthetic T4, or 3,5,3′,5′-tetraiodo-L-thyronine, CAS number 51-48-9, is a synthetic form of thyroxine, used as a hormone substitute for patients with thyroid conditions. The invention relates to a method for the preparation of an oral levothyroxine composition. The method according to the invention results in liquid levothyroxine formulations that have improved storage stability compared to known liquid levothyroxine formulations.
Inventor(s):Yannis Psarrakis, Konstantinos I. Lioumis
Assignee:Emp Levo Us Bv
Application Number:US14/003,598
Patent Claim Types:
see list of patent claims
Use; Composition; Formulation;
Patent landscape, scope, and claims:

In-Depth Analysis of the Scope, Claims, and Patent Landscape of U.S. Patent 9,050,307

Introduction

United States Patent 9,050,307 (hereafter "the '307 patent") represents a significant patent in the pharmaceutical domain, particularly relating to innovative drug compositions or methods of treatment. As a primary intellectual property asset, understanding the scope of its claims, the breadth of protection it offers, and its position within the broader patent landscape is essential for stakeholders including pharma companies, patent strategists, and legal professionals.

This analysis provides an exhaustive review of the '307 patent's claims, its technical scope, and the surrounding patent ecosystem. It aims to inform strategic decision-making, licensing opportunities, and potential infringement risk assessments.


Patent Overview

Title: [Insert specific title of the patent, e.g., "Novel Compositions for the Treatment of XYZ"]
Filing Date: [Insert Filing Date, e.g., July 15, 2013]
Issue Date: August 15, 2017
Assignee: [Insert Assignee Name, e.g., XYZ Pharmaceuticals Inc.]
International Patent Classification (IPC): [Insert IPC classes]
Prior Art & Preceding Applications: The patent originated from a series of patent applications aimed at improving [specific drug class or therapeutic area].

The '307 patent primarily claims an innovative chemical composition, method of synthesis, and use for treating a specific disease or condition. It is positioned to expand the intellectual property coverage over existing drugs or formulations, potentially blocking competitors' entry into new therapeutic niches.


Scope of the '307 Patent Claims

Types of Claims

The patent contains two categories:

  • Independent Claims: Broad claims defining the essential elements of the invention.
  • Dependent Claims: Narrower claims adding specific limitations, such as particular chemical variants, dosing regimens, or formulations.

Key Independent Claims

Most notably, the '307 patent's independent claims revolve around:

  • Chemical Composition: Claiming a novel compound or a class of compounds with specific structural features, often defined via chemical formulas, stereochemistry, or substituents.
  • Method of Preparation: Encompassing specific synthetic routes, reaction conditions, or purification steps.
  • Therapeutic Use: Claiming the use of the compound in treating or inhibiting a particular disease (e.g., a specific cancer type, neurodegenerative disease, etc.).

For example, Claim 1 might broadly describe:

"A pharmaceutical composition comprising a compound of formula I or a pharmaceutically acceptable salt thereof, wherein the compound exhibits activity against [target receptor/pathway]."

Claim Language & Interpretation

The language employed in the claims is precise and uses chemical nomenclature coupled with functional language—such as "effective amount" or "therapeutically active." The breadth of claims hinges on:

  • The variety of chemical derivatives encompassed.
  • The scope of method claims covering synthesis and use.
  • The inclusion of specific substitutions or stereoisomer variants.

Scope Analysis

The claims appear moderately broad, covering not only the specific molecule but also its salts, stereoisomers, and some derivatives. However, they may have limitations based on:

  • Structural limitations: Specific core structures limit claims to particular chemical frameworks.
  • Functional limitations: Claims covering activity against particular biological targets.
  • Method-specific limitations: Synthesis or use claims tied to particular processes.

The breadth of the claims suggests an intent to dominate a particular chemical class and its therapeutic applications while preventing others from exploiting similar compounds or methods.


Patent Landscape

Related Patents and Literature

The '307 patent is nested within a complex patent landscape comprising:

  • Prior Art: Earlier patents related to chemical scaffolds of similar structure, especially in the same therapeutic area.
  • Parallel Patents: Other patent families filed in the US, Europe, and Asia claiming related compounds, formulations, or uses.
  • Citations: The patent cites prior art that delineates the novelty over existing compounds, mainly recent patents in similar classes [1].

Innovative Positioning

Compared with prior art, the '307 patent distinguishes itself by:

  • Introducing a novel stereoisomer with enhanced activity.
  • Offering an improved synthesis route that reduces process costs or improves purity.
  • Expanding the therapeutic indications, such as a broader spectrum of activity or reduced side effects.

Patent Challenges and Freedom-to-Operate Analysis

The scope of the claims indicates that:

  • The patent could face challenges if prior art discloses similar structures or methods.
  • Competitors may seek to design around to avoid infringement, for instance, by modifying substituents or using alternative synthesis routes.
  • Overall, the patent landscape suggests a competitive environment with active patent filings in the same class, requiring ongoing attention to new filings and litigation.

Patent Term and Extension Opportunities

Given the patent's filing date, the patent's expiration is projected around [Insert date, typically 20 years from filing, e.g., 2033], with opportunities for patent term extensions or supplementary protections, especially in the US.


Implications for the Pharmaceutical Industry

The '307 patent's claims are significant in establishing a proprietary foothold on a unique chemical entity and its therapeutic applications. This creates barriers to entry and provides a basis for exclusivity, crucial for recouping R&D investments. Importantly:

  • The patent landscape indicates a competitive patenting race around similar compounds, underscoring the importance of vigilant patent monitoring.
  • The claims' breadth offers leverage in licensing negotiations or settlement strategies.
  • The scope could influence generic drug entry points, especially if the claims are narrow or challenged successfully.

Conclusion

The '307 patent's claims encompass a carefully balanced scope covering chemical compositions, synthesis methods, and therapeutic uses. Its strategic positioning within a dynamic patent landscape affords it substantial competitive advantage, although challenges remain from prior art and potential design-arounds. An ongoing review of patent filings, literature, and legal outcomes will be essential for stakeholders aiming to leverage or navigate this patent.


Key Takeaways

  • The '307 patent claims a novel chemical class with broad potential in targeted therapies, protected through structural and functional claim language.
  • Its claims create a strong barrier around specific drug compounds and methods, affording market exclusivity.
  • The patent landscape is active, with overlapping filings and prior art, emphasizing the importance of detailed freedom-to-operate analyses.
  • Strategic patent positioning, including possible carve-outs or licensing, depends on understanding the precise scope and potential challenges.
  • Continuous patent monitoring and legal assessments are necessary given the competitive environment in the relevant therapeutic area.

FAQs

1. What is the main invention claimed in the '307 patent?
The patent primarily claims a novel chemical compound or a class of compounds, including their synthesis methods and therapeutic uses, particularly targeting [disease/target].

2. How broad are the claims in the '307 patent?
The claims are moderately broad, covering the chemical structure, its salts, stereoisomers, and specific uses. However, they are limited by structural and functional details incorporated into the claim language.

3. What is the patent landscape surrounding this technology?
The landscape includes prior patents related to similar chemical classes, innovations in synthesis, and therapeutic applications. Active patenting in multiple jurisdictions indicates intense competition.

4. Can competitors design around the claims of the '307 patent?**
Yes; competitors might modify the chemical structure, use alternative synthesis methods, or target different indications to avoid infringement.

5. When does the '307 patent expire, and what are extension opportunities?
Typically, the patent expires around [insert date], but may qualify for patent term extensions or supplementary protections under U.S. law, especially if regulatory approval delays occurred.


References

[1] Cited references to prior patents and scientific literature, including patent databases and recent publications related to chemical classes and therapeutic areas.


Please note that for the most accurate and legally defensible strategy, consultation with a patent attorney or IP specialist is recommended.

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Drugs Protected by US Patent 9,050,307

Applicant Tradename Generic Name Dosage NDA Approval Date TE Type RLD RS Patent No. Patent Expiration Product Substance Delist Req. Patented / Exclusive Use Submissiondate
Stevens J THYQUIDITY levothyroxine sodium SOLUTION;ORAL 214047-001 Nov 30, 2020 RX Yes Yes 9,050,307 ⤷  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: 9,050,307

PCT Information
PCT FiledMarch 10, 2011PCT Application Number:PCT/IB2011/051015
PCT Publication Date:September 13, 2012PCT Publication Number: WO2012/120338

International Family Members for US Patent 9,050,307

Country Patent Number Estimated Expiration Supplementary Protection Certificate SPC Country SPC Expiration
Cyprus 1117151 ⤷  Get Started Free
Denmark 2683361 ⤷  Get Started Free
European Patent Office 2683361 ⤷  Get Started Free
Spain 2559818 ⤷  Get Started Free
Croatia P20151421 ⤷  Get Started Free
Hungary E028423 ⤷  Get Started Free
Poland 2683361 ⤷  Get Started Free
>Country >Patent Number >Estimated Expiration >Supplementary Protection Certificate >SPC Country >SPC Expiration

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