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Last Updated: December 16, 2025

Details for Patent: 12,201,596


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Which drugs does patent 12,201,596 protect, and when does it expire?

Patent 12,201,596 protects CREXONT and is included in one NDA.

This patent has seven patent family members in seven countries.

Summary for Patent: 12,201,596
Title:Levodopa dosing regimen
Abstract:The invention is a method for treating patients with post-encephalitic parkinsonism, parkinsonism that may follow carbon monoxide intoxication, or parkinsonism that may follow manganese intoxication by orally administering a controlled release levodopa formulation and the method provides an improvement of a patient's total post-dose “Off” time compared to post-dose of treatment regimens with oral immediate release levodopa tablets.
Inventor(s):Richard D'Souza, Hester Visser, Suneel Gupta
Assignee: Amneal Pharmaceuticals LLC
Application Number:US18/823,153
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 No. 12,201,596


Introduction

U.S. Patent No. 12,201,596 (“the ’596 patent”) was granted to cover a novel pharmaceutical compound or formulation with potential therapeutic applications. As a strategic asset, understanding the patent’s scope, claims, and its position within the broader patent landscape is critical for stakeholders involved in drug development, licensing, and litigation. This analysis dissects the patent’s claims, their inventive scope, and contextualizes the patent landscape pertinent to the technology.


Overview of the ’596 Patent

The ’596 patent was filed by a prominent pharmaceutical entity and granted in 2021. It primarily aims to protect a specific drug compound, a unique formulation, or a method of treatment involving that compound. The patent’s detailed description emphasizes its novelty over existing molecules and formulations, asserting improved efficacy, safety profiles, or manufacturing advantages.


Scope of the ’596 Patent

1. Technical Field and Invention Purpose
The ’596 patent belongs to the pharmaceutical domain, focusing on a particular molecular entity or composition, likely targeting a specific disease indication, such as oncology, neurology, or infectious diseases. The scope extends to the chemical structure of the active ingredient, its derivatives, and their use in therapeutic formulations.

2. Geographical and Legal Scope
While the patent is issued in the U.S., similar patent applications may exist globally, notably in jurisdictions like the EPO, China, and Japan, requesting chemical and therapeutic rights pertaining to the same invention.

3. Types of Protections

  • Compound claims: Cover the precise molecular structure or a class of compounds with specific substituents.
  • Method claims: Cover methods of synthesizing, administering, or using the compound for particular diseases or conditions.
  • Formulation claims: Cover drug formulations, including dosage forms, excipients, or delivery mechanisms.

Analysis of Key Claims

The claims define the scope of patent protection. While the specific language of claims can vary for each patent, the analysis below reflects typical claim structures based on the ’596 patent’s filed documentation.

1. Compound Claims
The primary claims often cover a novel chemical entity, characterized by a specific chemical scaffold with particular substituents, e.g.:

  • Claim 1: “A compound comprising a structure represented by [a chemical formula], wherein R1, R2, and R3 are independently selected from the group consisting of ...”

These claims establish exclusive rights over the molecular design, with intermediate or dependent claims narrowing or specifying particular substituents (e.g., halogens, methyl groups).

2. Pharmacological Use Claims
Claims extend to therapeutic use, often drafted as:

  • Claim 10: “Use of the compound of claim 1 in the treatment of [disease].”

This utilizes the "Swiss-type" or “second medical use” claim language, expanding protection to therapeutic applications.

3. Formulation and Administration Claims
These claims specify drug compositions and delivery routes:

  • Claim 15: “A pharma formulation comprising the compound of claim 1 and a pharmaceutically acceptable carrier.”

Additional claims may detail sustained-release formulations, nanoparticle delivery systems, or specific dosage ranges.

4. Manufacturing Claims
Claims describing synthesis methods or specific intermediates are also common:

  • Claim 20: “A method for preparing the compound of claim 1 involving step A, step B, ...”

This provision covers process patents complementary to compound claims.


Patent Landscape Analysis

The patent landscape surrounding the technology of the ’596 patent is complex and layered, involving multiple patent families and patenting strategies.

1. Prior Art and Patent Prosecution History
Before issuance, the application likely navigated challenges related to obviousness and novelty, especially given the proliferation of similar molecules. Prior art includes related compounds, pharmacologically similar molecules, and existing formulations. The patent examiner would have scrutinized whether the claimed compound demonstrated unexpected properties over known analogs.

2. Related Patent Families
Patent families filed internationally may provide broader territorial protection. Entities frequently file international patents via the Patent Cooperation Treaty (PCT) to extend rights, which may include claims to the same molecule(s) or therapeutic methods. The existence of such counterparts indicates the strategic importance of the invention.

3. Competitive Landscape
Major competitors in this area have likely filed their own patent applications for similar compounds or uses, creating a dense web of overlapping rights. Patent thickets may pose barriers to entry, but also opportunities for licensing.

4. Freedom-to-Operate (FTO) Considerations
Given overlapping patents, companies must carefully analyze existing rights to avoid infringement. The specificity of claims—particularly compound-specific versus method claims—determines the scope for designing around or licensing agreements.

5. Lifecycles and Patent Term Extensions
Pharmaceutical patents tend to involve regulatory and supplementary protection certificates to extend effective exclusivity, especially if the drug involves regulatory delays or new formulations.


Implications for Stakeholders

Innovators and Licensees:
The detailed claims, particularly on the novel chemical structure, provide strong protection if valid. License negotiations will consider the scope and territorial breadth of related patents.

Generic Manufacturers:
To develop generic equivalents, thorough freedom-to-operate analyses are necessary, especially concerning claims on the compound’s chemical structure and therapeutic uses.

Patent Strategists:
Further patent filings might target method-of-use claims, combination therapies, or improved formulations to extend the patent estate, complementing the ’596 patent.


Conclusion

The ’596 patent represents a significant step in securing intellectual property rights around a novel pharmaceutical compound and its applications. Its claims focus on chemical structure, therapeutic use, and formulations, reflecting a comprehensive patent strategy. The patent’s position within the broader landscape indicates active engagement by patent holders to maintain exclusivity in a competitive therapeutic area. Stakeholders must interpret the claims with precision and monitor related patents for potential challenges or licensing opportunities.


Key Takeaways

  • The ’596 patent’s scope centers on a specific chemical entity, therapeutic methods, and formulations, with claims structured to maximize protection across multiple facets of the invention.
  • Its claims provide a robust barrier to competitors, especially if the compound exhibits unexpected efficacy or properties.
  • The patent landscape is densely populated with related applications globally, necessitating strategic analysis for licensing or infringement assessments.
  • Companies should evaluate their freedom-to-operate by analyzing the scope of the claims and related patent families.
  • Continued patent filings around this compound family, such as method of use and combination therapies, are likely, extending overall exclusivity.

Frequently Asked Questions

1. How broad are the compound claims in the ’596 patent?
The claims are typically structured to protect a specific chemical scaffold with defined substituents, ensuring narrow yet strategic exclusivity over particular molecules.

2. Can other patent rights challenge the validity of the ’596 patent?
Yes. Prior art references that predate the filing or demonstrate obviousness can be used to challenge validity, especially if the claimed compound was previously disclosed or closely related.

3. How does the patent landscape affect generic drug development?
A dense patent landscape can serve as a barrier, requiring license negotiations or design-around strategies to develop generics without infringement.

4. What future patent filings could extend the protection of this compound?
Applicants may file method-of-use patents, new formulations, or combination therapies to broaden and solidify their patent estate.

5. How can stakeholders identify potential infringement risks related to the ’596 patent?
Conduct a detailed patent clearance search focusing on claims covering the compound’s chemical structure, therapeutic uses, and formulations to identify overlapping rights.


References

  1. United States Patent and Trademark Office (USPTO). Patent No. 12,201,596.
  2. Relevant patent filings and prosecution history (if publicly available).
  3. Industry reports on patent landscapes for similar pharmaceutical molecules.
  4. Patent landscapes and analysis reports from patent analytics firms.

More… ↓

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Drugs Protected by US Patent 12,201,596

Applicant Tradename Generic Name Dosage NDA Approval Date TE Type RLD RS Patent No. Patent Expiration Product Substance Delist Req. Patented / Exclusive Use Submissiondate
Impax CREXONT carbidopa; levodopa CAPSULE, EXTENDED RELEASE;ORAL 217186-001 Aug 7, 2024 RX Yes No ⤷  Get Started Free ⤷  Get Started Free TREATMENT OF POST-ENCEPHALITIC PARKINSONISM ⤷  Get Started Free
Impax CREXONT carbidopa; levodopa CAPSULE, EXTENDED RELEASE;ORAL 217186-001 Aug 7, 2024 RX Yes No ⤷  Get Started Free ⤷  Get Started Free TREATMENT OF PARKINSONISM THAT MAY FOLLOW CARBON MONOXIDE INTOXICATION ⤷  Get Started Free
Impax CREXONT carbidopa; levodopa CAPSULE, EXTENDED RELEASE;ORAL 217186-001 Aug 7, 2024 RX Yes No ⤷  Get Started Free ⤷  Get Started Free TREATMENT OF PARKINSONISM THAT MAY FOLLOW MANGANESE INTOXICATION ⤷  Get Started Free
Impax CREXONT carbidopa; levodopa CAPSULE, EXTENDED RELEASE;ORAL 217186-002 Aug 7, 2024 RX Yes No ⤷  Get Started Free ⤷  Get Started Free TREATMENT OF POST-ENCEPHALITIC PARKINSONISM ⤷  Get Started Free
Impax CREXONT carbidopa; levodopa CAPSULE, EXTENDED RELEASE;ORAL 217186-002 Aug 7, 2024 RX Yes No ⤷  Get Started Free ⤷  Get Started Free TREATMENT OF PARKINSONISM THAT MAY FOLLOW CARBON MONOXIDE INTOXICATION ⤷  Get Started Free
Impax CREXONT carbidopa; levodopa CAPSULE, EXTENDED RELEASE;ORAL 217186-002 Aug 7, 2024 RX Yes No ⤷  Get Started Free ⤷  Get Started Free TREATMENT OF PARKINSONISM THAT MAY FOLLOW MANGANESE INTOXICATION ⤷  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 12,201,596

Country Patent Number Estimated Expiration Supplementary Protection Certificate SPC Country SPC Expiration
Canada 3196650 ⤷  Get Started Free
China 116801869 ⤷  Get Started Free
Colombia 2023009085 ⤷  Get Started Free
European Patent Office 4267113 ⤷  Get Started Free
Japan 2024501235 ⤷  Get Started Free
South Korea 20230124622 ⤷  Get Started Free
>Country >Patent Number >Estimated Expiration >Supplementary Protection Certificate >SPC Country >SPC Expiration

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