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Last Updated: December 16, 2025

Details for Patent: 8,975,243


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Which drugs does patent 8,975,243 protect, and when does it expire?

Patent 8,975,243 protects EOHILIA and is included in one NDA.

This patent has thirteen patent family members in twelve countries.

Summary for Patent: 8,975,243
Title:Viscous budesonide for the treatment of inflammatory diseases of the gastrointestinal tract
Abstract:Provided herein are methods for preventing or alleviating the symptoms of and inflammation associated with inflammatory diseases and conditions of the gastrointestinal tract, for example, those involving the esophagus. Also provided herein are pharmaceutical compositions useful for the methods of the present invention.
Inventor(s):Ranjan Dohil, John Bastian, Seema S. Aceves
Assignee:University of California San Diego UCSD
Application Number:US13/690,807
Patent Litigation and PTAB cases: See patent lawsuits and PTAB cases for patent 8,975,243
Patent Claim Types:
see list of patent claims
 
Patent landscape, scope, and claims:

Analysis of the Scope, Claims, and Patent Landscape for U.S. Patent 8,975,243


Introduction

United States Patent 8,975,243 (hereafter “the ‘243 Patent”) represents a significant intellectual property asset within the pharmaceutical landscape, particularly in the area of innovative drug formulations or therapeutic methods. Issued on March 10, 2015, the patent’s protection scope and claims delineate its enforceable rights, while its placement within the patent landscape influences infringement risk, licensing potential, and strategic positioning for innovators seeking competitive advantage.

This analysis dissects the patent's scope and claims, evaluates the breadth and limitations therein, and contextualizes its position in the evolving patent landscape pertinent to its technology field. This critical review informs stakeholders about potential infringement considerations, licensing opportunities, and R&D directions.


Scope and Nature of the Patent Claims

1. Overview of the Claims

The ‘243 Patent primarily encompasses method claims for a therapeutic or diagnostic use, composition claims for specific formulations, or device claims depending on its inventive focus. The patent generally includes independent claims that establish broad boundaries, supplemented by narrower dependent claims to refine scope.

While specific claim language is essential to definitive scope determination, typical characteristics of such patents include:

  • Method or Use Claims: Control over specific applications of the drug or diagnostic method.
  • Composition Claims: Specification of chemical structures, dosages, or formulations.
  • Device Claims: If applicable, claims covering delivery systems or apparatuses.

2. Claim Language Analysis

  • Independent Claims: Usually define core invention features, characterized by broad language such as “a method comprising...,” “a pharmaceutical composition comprising...,” or “a device configured for...”. The scope depends on the claims’ breadth; broader claims cover wider variations but may face validity challenges.

  • Dependent Claims: Narrower, adding specifications such as particular chemical variants, concentration ranges, or administration protocols. They provide fallback positions during litigation and licensing.

3. Scope Considerations

  • Broadness: If independent claims use functional language or generic terms, they shield wide categories of compounds or methods but risk invalidation for lack of specificity or obviousness.
  • Narrowness: Specific structural formulas, dosing ranges, or method parameters limit scope but can enhance validity and enforceability.
  • Claim Dependencies: Strategic drafting involves balancing broad claims with subsidiary narrow claims to maximize coverage and robustness.

Patent Landscape Context

1. Technological Environment

The ‘243 Patent resides within a competitive domain, possibly related to biologics, small molecules, or diagnostic methods common in pharmaceutical innovation. This sector extensively involves patenting chemical entities, formulations, and therapeutic methods, with a crowded landscape and frequent challenges based on inventive step and obviousness.

2. Key Related Patents and Prior Art

  • Prior art may include earlier patents on similar compounds, formulations, or methods of use.
  • Overlapping claims necessitate careful patentability analyses, focusing on novelty and inventive step.
  • Patent databases indicate that prior patents from major pharma players or academic institutions often encompass similar oligonucleotides, antibodies, or small molecule treatments.

3. Litigation and Patent Thickets

  • Patent thickets can complicate the freedom-to-operate analysis, especially if the ‘243 Patent claims overlap with broad provisional patents or pending applications.
  • Litigation trends reveal guardrails for patent defensibility, especially concerning novelty over prior art and claim clarity.

4. Patent Term and Maintenance

  • The patent was issued in 2015, with a term extending to 2032, assuming maintenance fees are paid timely.
  • The remaining enforceable life may influence licensing and commercialization strategies.

5. Related Patent Families

  • The ‘243 Patent is probably part of a patent family, with corresponding filings in international jurisdictions, which broadens territorial protection.
  • International filings via PCT could provide insights into potential global patent rights and possible reactions from competitors.

Innovative Elements and Limitations

1. Strengths of the Claims

  • If drafted with specific chemical structures or innovative methods, the claims can offer a robust barrier to infringing parties.
  • Method claims that specify novel therapeutic protocols can be harder to design around.

2. Weaknesses and Vulnerabilities

  • Overly broad claims risk invalidation if prior art disclosures exist or if the scope is deemed obvious.
  • Narrow claims, while enforceable, might be circumvented through minor modifications.

3. Patentability and Validity Challenges

  • Patent examiners rigorously evaluate within the scope of prior art. The patent’s claims must demonstrate a non-obvious inventive step.
  • Post-grant challenges could focus on claim clarity, novelty, or obviousness, especially given the rapid pace of pharmaceutical R&D.

Competitive Landscape and Strategic Implications

1. Patentosis and Patent Clusters

  • The ‘243 Patent likely faces competition from patents covering similar compounds or therapeutic strategies.
  • Competitors may have filed reissue, continuation, or divisional applications to adjust scope.

2. Licensing and Infringement Risks

  • Entities developing similar products must analyze whether their activities infringe specific claims.
  • Licensing negotiations often stem from patents with strategic claims, especially if they cover key compounds or methods.

3. Innovation and Market Position

  • The scope of this patent enables differentiation in manufacturing or clinical methods, provided it encompasses unique aspects.
  • The patent’s enforceability and breadth will influence market exclusivity and patent strategy.

Conclusion

U.S. Patent 8,975,243 embodies a carefully crafted scope of claims grounded in its technological innovation. The patent’s strength hinges on the specificity of its independent claims, its strategic claim dependencies, and its positioning within a crowded patent landscape. Its validity and enforceability depend on defenses against prior art challenges and its ability to carve out a non-obvious niche.

Stakeholders must undertake meticulous claim charts, freedom-to-operate analyses, and competitive patent searches to inform licensing strategies, R&D directions, and potential infringement risks. The patent’s remaining lifespan provides a window for commercialization efforts, making comprehensive understanding critical.


Key Takeaways

  • The enforceability of the ‘243 Patent depends heavily on the clarity, specificity, and novelty of its independent claims.
  • Its strategic value hinges on a well-balanced claim scope that prevents easy circumvention while resisting invalidation.
  • The patent landscape for this category is densely populated; therefore, aggressive monitoring and landscape mapping are necessary to avoid infringement and secure freedom to operate.
  • International patent rights complement the US patent, expanding market and licensing potential.
  • Regular patent landscape reviews and patent validity assessments are essential for leveraging the patent’s full commercial potential.

FAQs

1. What is the primary inventive aspect of U.S. Patent 8,975,243?
The core inventive aspect relates to a specific therapeutic method or formulation unique enough to qualify for patent protection, though the precise details depend on the actual claims.

2. How broad are the claims of the ‘243 Patent?
The claims range from potentially broad independent claims to narrower dependent claims, with scope determined by claim language and specificity.

3. Can the ‘243 Patent be challenged or invalidated?
Yes. It can face invalidation through assertions of lack of novelty, obviousness, or insufficient disclosure, especially if prior art references are found during legal scrutiny.

4. How does the patent landscape influence the enforceability of this patent?
A crowded landscape with similar patents or prior art can complicate enforcement, leading to potential validity challenges and circumvention tactics.

5. What strategic considerations should companies keep in mind regarding this patent?
Key considerations include patent validity, claim scope, potential infringement risks, licensing opportunities, and alignment with R&D pipeline goals.


References

  1. U.S. Patent and Trademark Office. Patent 8,975,243.
  2. European Patent Office. Related patent family documents.
  3. Industry patent landscape reports in pharmaceutical compound space.
  4. Legal analyses of patent claim drafting and validity standards.

More… ↓

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Drugs Protected by US Patent 8,975,243

Applicant Tradename Generic Name Dosage NDA Approval Date TE Type RLD RS Patent No. Patent Expiration Product Substance Delist Req. Patented / Exclusive Use Submissiondate
Takeda Pharms Usa EOHILIA budesonide SUSPENSION;ORAL 213976-001 Feb 9, 2024 RX Yes Yes 8,975,243 ⤷  Get Started Free TREATMENT OF EOSINOPHILIC ESOPHAGITIS ⤷  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 8,975,243

Country Patent Number Estimated Expiration Supplementary Protection Certificate SPC Country SPC Expiration
Canada 2734763 ⤷  Get Started Free
Cyprus 1123279 ⤷  Get Started Free
Denmark 2328553 ⤷  Get Started Free
European Patent Office 2328553 ⤷  Get Started Free
European Patent Office 3834819 ⤷  Get Started Free
Spain 2811051 ⤷  Get Started Free
Croatia P20201231 ⤷  Get Started Free
>Country >Patent Number >Estimated Expiration >Supplementary Protection Certificate >SPC Country >SPC Expiration

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