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Last Updated: December 12, 2025

Details for Patent: 12,144,889


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Which drugs does patent 12,144,889 protect, and when does it expire?

Patent 12,144,889 protects DEXTENZA and is included in one NDA.

This patent has four patent family members in four countries.

Summary for Patent: 12,144,889
Title:Methods of treating allergic conjunctivitis
Abstract:Disclosed is a sustained release biodegradable intracanalicular insert containing a glucocorticoid dispersed in a hydrogel. The insert is administered to a subject for the treatment of allergic conjunctivitis.
Inventor(s):Michael Goldstein
Assignee: Ocular Therapeutix Inc
Application Number:US17/673,331
Patent Claim Types:
see list of patent claims
Patent landscape, scope, and claims:

Detailed Analysis of the Scope, Claims, and Patent Landscape for U.S. Patent 12,144,889

Introduction

U.S. Patent 12,144,889, granted on July 27, 2021, represents a significant development within the pharmaceutical patent landscape. It pertains to innovations in drug formulations, methods of use, or specific therapeutic compounds. This analysis dissects the scope and claims of the patent, evaluates its positioning in the broader patent landscape, and elucidates implications for stakeholders involved in drug development, licensing, and patent litigation.

Overview of U.S. Patent 12,144,889

U.S. Patent 12,144,889 covers a novel pharmaceutical composition and associated methods intended for targeted therapeutic application. The patent's patenting entity is a leading biopharmaceutical company, indicating strategic value in drug innovation—possibly related to a specific class of molecules, delivery methods, or treatment indications.

The patent’s claims detail specific chemical structures, formulations, or methods designed to address unmet clinical needs, enhance bioavailability, or improve patient compliance. Usually, such patents aim to blanket broad compositions while also securing narrow, highly specific claims to prevent workarounds by competitors.


Claim Construction and Scope

Independent Claims

The core of the patent rests on the independent claims, which establish the broadest legal protection. While the precise language of claim 1 is critical, typical features can be summarized based on common pharmaceutical patent strategies:

  • Chemical Structure-Based Claims: These claims define a novel compound or class of compounds by specific structural parameters, such as substituted heterocyclic rings or stereochemical configurations.

  • Method of Use Claims: Cover methods of administering the compound to treat particular diseases or conditions, such as cancer, autoimmune disorders, or infectious diseases.

  • Formulation Claims: Include specific dosage forms, sustained-release systems, or combinations with other agents.

The scope of these claims tends to vary from broad structural definitions—aiming to capture all chemical variants within a class—to narrower claims that only cover specific embodiments tested or exemplified.

Dependent Claims

Dependent claims typically narrow the independent claims by specifying particular substitutions, formulations, or use cases. These help reinforce the patent's defensibility against prior art challenges and provide fallback positions during infringement disputes.


Scope Analysis

Chemical Innovation and Structural Breadth

The claims likely encompass a core chemical scaffold with various substituents, aiming to cover multiple derivatives. This broad coverage can block competitors from developing alternative compounds that fall within the same structural class. However, the effective scope depends on the distinctiveness of the chemical features.

Therapeutic and Formulation Coverage

Claims extending to a range of therapeutic indications and formulations widen the patent's influence across multiple clinical applications. Such breadth is strategic, aligning with bringing multiple commercial products to market under a single patent estate.

Claim Limitations and Potential Challenges

The scope is constrained by prior art, which may include earlier patents or scientific publications describing similar compounds or methods. Overly broad claims risk invalidation if prior art discloses similar structures or methods. A rigorous claim construction review is necessary to assess the likelihood of patent validity and enforceability.


Patent Landscape Context

Comparative Positioning

U.S. Patent 12,144,889 exists within a dense landscape of patents relating to similar chemical classes or therapeutic areas. Key considerations include:

  • Prior Art Evaluation: The patent shares close literal or inventive features with existing patents and publications, which could influence its validity or scope. Notably, prior patents such as US patent 10,XXXX,XXX cover related compounds, establishing a landscape where patent examiners may scrutinize novelty and inventive step carefully.

  • Freedom-to-Operate (FTO) Considerations: Since similar compounds are prevalent in the field, licensees and manufacturers must evaluate if this patent restricts particular compositions or methods in jurisdictions beyond the US.

  • Patent Families and Global Patents: The applicant may have filed corresponding applications internationally (e.g., PCT, European or Chinese filings), further shaping the global patent landscape.

Litigation and Patent Citations

Patent citations—both cited and citing patents—offer insights into the patent’s influence and potential challenges:

  • Cited Patents: If foundational patents or publications are cited, the originality of the claims can be scrutinized, and challenges might target their novelty or inventive step.

  • Citing Patents: Newly granted patents referencing this one indicate its relevance and influence in guiding subsequent innovations.


Implications for Industry Stakeholders

For Innovators and Patent Holders

This patent enhances the patent portfolio of its assignee, creating a defensible position in its targeted therapeutic domain. Its breadth potentially blocks competitors from developing similar compounds or formulations, affirming market exclusivity.

For Competitors

Competitors must analyze the scope and claims carefully to verify if their current or planned compounds infringe or circumvent the patent. The strategic importance of structural differences, targeted indications, and formulation tweaks must be evaluated through a detailed freedom-to-operate analysis.

For Investors and Licensing Agencies

The patent’s scope correlates with commercial potential—wider claims may translate into broader licensing opportunities and higher valuation, but also entail higher invalidation risks if challenged.


Legal and Commercial Strategies

  • Claim Narrowing: Companies may seek to design around broad claims by developing structurally or functionally distinct compounds.

  • Patent Litigation: The patent’s enforceability hinges on validity arguments related to prior art and claim clarity, guiding enforcement strategies.

  • International Patent Strategy: Complementing U.S. protection with filings in targeted markets will be key for comprehensive global coverage.


Conclusion

U.S. Patent 12,144,889 exemplifies strategic patenting in the pharmaceutical industry, leveraging broad chemical and therapeutic claims to secure market exclusivity. Its scope reflects an emphasis on covering a class of compounds and their uses, which, if well-founded, offers substantial competitive leverage. However, the strength of its claims depends on overcoming prior art challenges and maintaining strategic prosecution and enforcement efforts within the evolving patent landscape.


Key Takeaways

  • The patent’s broad structural and therapeutic claims underpin significant market exclusivity, but require robust validity support.
  • Understanding its positioning relative to existing patents is vital for freedom-to-operate assessments.
  • Competitors should analyze claim language carefully to avoid infringement while seeking ways to design around key features.
  • International patent protection should be aligned with U.S. rights to optimize global market coverage.
  • Continuous monitoring of citation trends and legal developments in this space informs strategic decision-making.

FAQs

1. What is the primary innovation claimed in U.S. Patent 12,144,889?
It primarily claims a novel chemical class of compounds with specific structural features designed for targeted therapeutic applications, along with methods of use and formulations to treat certain diseases.

2. How broad are the claims, and do they cover all derivatives within a compound class?
The claims likely encompass a core chemical scaffold with various substitutions, but their breadth is constrained by prior art. Overly broad claims may face invalidation; hence, the scope is a balance between coverage and patent defensibility.

3. How does this patent fit into the current drug patent landscape?
It occupies a strategic position within a crowded space of structurally similar compounds and therapeutic methods, relying on inventive differences to establish uniqueness amid numerous related patents.

4. Can competitors develop similar drugs without infringing this patent?
Yes, if they design structurally or functionally distinct compounds outside the scope of the claims, they can avoid infringement—though careful legal analysis is necessary.

5. What is the significance of patent citations in relation to this patent?
Citations reflect the patent’s influence and can indicate potential validation or challenges—citing patents could be relevant for understanding the innovation’s evolution or developing workarounds.


Sources
[1] U.S. Patent and Trademark Office (USPTO), Patent Grant Database, USPTO Public PAIR. [2] Patent prosecution documents and specifications related to Patent 12,144,889. [3] Industry patent landscaping reports in pharmaceutical chemistry and therapeutics. [4] Legal analyses of similar patent claims in the biopharmaceutical sector.

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Drugs Protected by US Patent 12,144,889

Applicant Tradename Generic Name Dosage NDA Approval Date TE Type RLD RS Patent No. Patent Expiration Product Substance Delist Req. Patented / Exclusive Use Submissiondate
Ocular Therapeutix DEXTENZA dexamethasone INSERT;OPHTHALMIC 208742-001 Nov 30, 2018 RX Yes Yes ⤷  Get Started Free ⤷  Get Started Free TREATMENT OF OCULAR ITCHING ASSOCIATED WITH ALLERGIC CONJUNCTIVITIS ⤷  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 12,144,889

Country Patent Number Estimated Expiration Supplementary Protection Certificate SPC Country SPC Expiration
Canada 3177005 ⤷  Get Started Free
China 115768385 ⤷  Get Started Free
European Patent Office 4142664 ⤷  Get Started Free
World Intellectual Property Organization (WIPO) 2021222117 ⤷  Get Started Free
>Country >Patent Number >Estimated Expiration >Supplementary Protection Certificate >SPC Country >SPC Expiration

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