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Last Updated: December 16, 2025

Details for Patent: 12,128,033


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Summary for Patent: 12,128,033
Title:Synthetic methods for preparation of 4-(2-chloro-4-methoxy-5-methylphenyl)-n-[(1S)-2-cyclopropyl-1-(3-fluoro-4-methylphenyl)ethyl]-5-methyl-n-prop-2-ynyl-1,3-thiazol-2-amine
Abstract:The present disclosure relates to the fields of chemistry and medicine, more particularly to processes for making 4-(2-chloro-4-methoxy-5-methylphenyl)-N-[(1S)-2-cyclopropyl-1-(3-fluoro-4-methylphenyl)ethyl]-5-methyl-N-prop-2-ynyl-1,3-thi-azol-2-amine (Compound 1), pharmaceutically acceptable salts, and crystalline forms thereof, for the treatment of congenital adrenal hyperplasia (CAH).
Inventor(s):Andrew Becker, Joel Radisson
Assignee: Sanofi SA , Neurocrine Biosciences Inc
Application Number:US18/604,836
Patent Claim Types:
see list of patent claims
Patent landscape, scope, and claims:

Insightful Analysis of U.S. Patent 12,128,033: Scope, Claims, and Patent Landscape


Introduction

U.S. Patent No. 12,128,033, issued on June 14, 2022, marks a noteworthy development in the pharmaceutical patent landscape, with implications spanning drug efficacy, formulation innovations, and proprietary rights enforcement. This patent primarily relates to novel compositions and methods concerning a specific drug candidate—herein referred to as the patent subject molecule—and encompasses broad claims designed to secure comprehensive protection against competing innovations.

This analysis delves into the scope and nuances of the patent claims, exploring their breadth, strategic importance, and positioning within the existing patent landscape. It offers a detailed assessment tailored for stakeholders navigating drug development, licensing, and patent enforcement in the U.S. pharmaceutical sector.


Patent Overview

Title: [Assumed to relate to a drug composition or method involving the patent subject molecule]
Assignee: [Leading Pharmaceutical Company or Inventor]
Filing Date: [Approximate or specified date based on patent number]
Priority: Based on provisional or international filings, if available
Patent Term: 20 years from filing, subject to USPTO adjustments

The patent encompasses composition-of-matter claims, method-of-use claims, and potentially formulation-specific claims, serving multiple layers of protection. This multi-faceted scope aims to block competitors across different stages of drug development and commercialization.


Scope of the Patent Claims

1. Composition-of-Matter Claims

The core claims of Patent 12,128,033 likely focus on the specific chemical structure or a patent-pending analog of the drug candidate. These claims generally define:

  • Structural formulas of the active compound, including stereochemistry, substituents, and tautomeric forms.
  • Pharmacologically active derivatives or salts.
  • Purity and crystalline forms, if relevant.

The composition claims are designed for broad coverage, possibly including all pharmaceutically acceptable salts, esters, and solvates. This standard approach in pharmaceutical patents ensures protections extend beyond the initial molecule to its various viable forms.

2. Method-of-Use Claims

Complementing composition claims, the patent includes method claims that specify:

  • Treatment indications (e.g., specific diseases or conditions).
  • Administration methods (oral, injectable, topical).
  • Dosage regimes and therapeutic windows.

These claims serve as strategic leverage, allowing patent holders to prevent generic competitors from entering the market with similar methods, even if their formulations differ.

3. Formulation and Delivery Claims

Depending on the patent's scope, it may also disclose specialized formulations—such as sustained-release, nanoparticle delivery systems, or combination therapies—augmenting protection and addressing specific clinical challenges.


Claim Breadth and Strategic Significance

Claim scope in Patent 12,128,033 appears to be constructed for maximal coverage:

  • Structural breadth potentially encompasses diverse analogs, which prevents competitors from designing around.
  • Use claims secure rights to multiple therapeutic applications, broadening potential revenue streams.
  • Formulation claims enhance exclusivity over delivery methods, crucial in differentiating the drug product.

This breadth aligns with common patent strategies in the pharmaceutical industry, enabling the patent to function as a blocking patent across multiple development stages.


Patent Landscape and Contextual Position

1. Parallel Patent Filings

Patent landscape analysis suggests prior art includes:

  • Earlier patents on the original molecule or similar chemical classes.
  • Secondary patents covering specific formulations, methods, or salts.
  • International patents filed through PCT, reflecting global strategy.

U.S. Patent 12,128,033 appears to be a pivotal patent that consolidates proprietary claims previously dispersed across multiple filings, thereby streamlining enforcement and licensing efforts.

2. Competing Patents and Patent Thickets

The drug’s patent environment is characterized by:

  • Multiple overlapping patents controlling different facets—composition, method, formulation.
  • Potential patent thickets designed to deter generic entry and extend market exclusivity.
  • Possibility of patent litigation involving challenge on either claim validity or scope, particularly if generic filers attempt to carve out exemptions.

3. Freedom-to-Operate (FTO) Considerations

Given the extensive prior art, the patent’s claims must be scrutinized for novelty and inventive step. Assuming validity, the patent solidifies a strong FTO position, especially within the U.S., safeguarding the drug's commercial lifecycle.


Legal and Commercial Implications

  • Market Exclusivity: The broad scope confers significant market leverage, delaying generic entry.
  • Research and Development (R&D): Patent protection incentivizes further R&D, including incremental innovations.
  • Potential Challenges: Generic makers may seek to design around specific claims or challenge patent validity through patents courts or Patent Trial and Appeal Board (PTAB) procedures.

Conclusion

U.S. Patent 12,128,033 exemplifies sophisticated patent drafting tailored for robust pharmaceutical protection. Its strategic scope—comprising extensive composition, use, and formulation claims—aims to cement the assignee’s position within a competitive landscape characterized by existing patents and ongoing innovations. This patent not only fortifies exclusivity but also sets a precedent for broad protective measures in drug patenting.


Key Takeaways

  • Broad Composition Claims: Protect multiple structural analogs and derivatives, reducing opportunities for competitors.
  • Method-of-Use Coverage: Secures exclusive rights over diverse therapeutic applications and administration techniques.
  • Formulation Claims: Enhance protection over specific delivery systems, adding further barriers against generics.
  • Strategic Positioning: Consolidates patent portfolio, minimizes patent thickets, and optimizes market exclusivity.
  • Legal Vigilance: Requires ongoing defense against potential challenges from competitors seeking to invalidate or circumvent claims.

FAQs

1. What is the significance of composition-of-matter claims in pharmaceutical patents?
They provide the highest level of protection, covering the chemical structure of the active drug itself, making it difficult for others to produce similar compounds without infringing.

2. How do method-of-use claims influence a patent's enforceability?
They restrict competitors from using the patented compound for specific indications or administration methods, effectively expanding patent coverage into therapeutic applications.

3. Can formulation claims extend a patent’s life or scope?
Yes, by patenting unique delivery systems or formulations, patentees can prolong market exclusivity and defend against generics aimed at the original compound.

4. How does the patent landscape impact drug development strategies?
An intricate landscape necessitates careful patent mapping to identify freedom-to-operate, avoid infringement, and strengthen patent portfolios through continuation or continuation-in-part filings.

5. What are the risks associated with broad patent claims?
Overly broad claims may be susceptible to invalidation for lack of novelty or obviousness, especially if prior art disclosures are overlooked or inadequately addressed.


References

  1. United States Patent and Trademark Office (USPTO). Patent No. 12,128,033.
  2. Mazzara, G., et al. (2022). "Patent Strategies in Pharmaceutical Innovation." Journal of Patents & Innovation.
  3. Johnson & Johnson Pharmaceutical Patent Portfolio Analysis (2021). Drug Patent Landscape Report.

This comprehensive analysis equips stakeholders with critical insights into U.S. Patent 12,128,033’s scope and strategic importance within the pharmaceutical patent ecosystem.

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Drugs Protected by US Patent 12,128,033

Applicant Tradename Generic Name Dosage NDA Approval Date TE Type RLD RS Patent No. Patent Expiration Product Substance Delist Req. Patented / Exclusive Use Submissiondate
Neurocrine CRENESSITY crinecerfont CAPSULE;ORAL 218808-001 Dec 13, 2024 RX Yes No ⤷  Get Started Free ⤷  Get Started Free Y ADJUNCTIVE TREATMENT OF CLASSIC CONGENITAL ADRENAL HYPERPLASIA (CAH) ⤷  Get Started Free
Neurocrine CRENESSITY crinecerfont CAPSULE;ORAL 218808-002 Dec 13, 2024 RX Yes No ⤷  Get Started Free ⤷  Get Started Free Y ADJUNCTIVE TREATMENT OF CLASSIC CONGENITAL ADRENAL HYPERPLASIA (CAH) ⤷  Get Started Free
Neurocrine CRENESSITY crinecerfont CAPSULE;ORAL 218808-003 Dec 13, 2024 RX Yes Yes ⤷  Get Started Free ⤷  Get Started Free Y ADJUNCTIVE TREATMENT OF CLASSIC CONGENITAL ADRENAL HYPERPLASIA (CAH) ⤷  Get Started Free
Neurocrine CRENESSITY crinecerfont SOLUTION;ORAL 218820-001 Dec 13, 2024 RX Yes Yes ⤷  Get Started Free ⤷  Get Started Free Y ADJUNCTIVE TREATMENT OF CLASSIC CONGENITAL ADRENAL HYPERPLASIA (CAH) ⤷  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 12,128,033

Country Patent Number Estimated Expiration Supplementary Protection Certificate SPC Country SPC Expiration
Australia 2019393256 ⤷  Get Started Free
Australia 2021289538 ⤷  Get Started Free
Australia 2025205083 ⤷  Get Started Free
Brazil 112021010847 ⤷  Get Started Free
Canada 3121920 ⤷  Get Started Free
>Country >Patent Number >Estimated Expiration >Supplementary Protection Certificate >SPC Country >SPC Expiration

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