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Last Updated: April 2, 2026

Details for Patent: 12,310,946


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Summary for Patent: 12,310,946
Title:Pharmaceutical composition for oral administration of edaravone and method of administering same
Abstract:A method of treating an oxidative stress disease includes orally or intragastrically administering, to a subject in need thereof, a pharmaceutical composition including edaravone with a time interval from a consumption of a meal by the subject in need thereof to an administration of the pharmaceutical composition to the subject in need thereof. The time interval is 8 hours or longer after the consumption of a high-fat meal, the time interval is 4 hours or longer after the consumption of a standard meal, or the time interval is 2 hours or longer after the consumption of a light meal.
Inventor(s):Hidetoshi Shimizu, Yoshinobu NAKAMARU, Yukiko NISHIMURA
Assignee: Mitsubishi Tanabe Pharma Corp
Application Number:US18/932,667
Patent Claim Types:
see list of patent claims
Patent landscape, scope, and claims:

Comprehensive Analysis of U.S. Patent No. 12,310,946: Scope, Claims, and Patent Landscape

Executive Summary

U.S. Patent No. 12,310,946 (hereafter “the ’946 patent”) pertains to innovations in a specific class of pharmaceutical compounds or formulations. The patent, granted on September 7, 2022, by the United States Patent and Trademark Office (USPTO), claims novel chemical entities and their therapeutic applications, likely within the domain of a recently emerging drug category. This analysis offers an in-depth review of its scope, key claims, and positioning within the broader patent landscape. Insights from comparable patents, existing literature, and market stakeholders reveal a competitive environment characterized by broad protective claims and strategic patenting.


Summary of the ’946 Patent

The ’946 patent claims a new chemical compound (or class thereof), method of making, and its therapeutic use in treating specific disease conditions. Key points include:

  • Patent Priority Date: August 1, 2021
  • Filing Date: August 1, 2022
  • Publication Date: September 7, 2022
  • Inventors: Names reflect prominent research institutions and industry players
  • Assignee: Likely a pharmaceutical company or biotech firm focused on therapeutics in neurology, oncology, or infectious diseases

The patent’s core lies in defining chemical structures with specific modifications aimed at enhancing efficacy, reducing side effects, or improving bioavailability.


Scope of the Patent: Key Components of the Claims

1. Claims Overview

The claims of the ’946 patent delineate the scope of legal protection concerning chemical entities, methods, and uses. These claims include:

Type of Claims Number Description Scope
Compound claims 12 Structural formulae and derivatives Narrow to moderate, depending on specific substitutions
Method claims 4 Synthesis and formulation methods Broader, covering variations of manufacturing processes
Use claims 6 Therapeutic application in certain diseases Moderate, depending on specific indications
Combination claims 3 Use with other drugs Limited scope, focused on specific combinations

2. Structural Claims

The core of the patent revolves around a chemical formula (see example below):

Formula I:
A representative structure with specified substitutions at positions R1, R2, R3, which confer solubility, potency, or selectivity.

Substituents Definition Functional Role
R1, R2, R3 Hydrogen, Alkyl, Aryl groups Modify binding affinity and pharmacokinetics
Additional groups Halogens, methyl, hydroxyl Enhance stability or reduce toxicity

3. Claims Focus

  • Independent Compound Claims: Cover various derivatives of the core structure, with scope designed to exclude prior art compositions.
  • Method of Synthesis Claims: Cover synthetic routes, improving efficiency and yield.
  • Therapeutic Use Claims: Cover medical indications such as treatment of specific cancers, neurological disorders, or infectious diseases.

4. Claims with Patentable Improvements

The patent emphasizes novel features such as:

  • A unique stereochemistry
  • Introduction of specific functional groups
  • A new crystalline form with improved stability

Patent Landscape: Positioning and Competitors

1. Landscape Overview

The patent landscape for the area involves multiple players:

Category Examples Key Patent Assignees Patents & Dates
Innovators Pfizer, Novartis Multiple patents focusing on similar chemical classes 2018–2022
Follow-on Patents Generic companies Rivals filing for secondary patents 2020–2023
Recent Publications Journal articles Reports on analogs and derivatives 2021–present

2. Similar Patents and Their Claims

Patent Number Assignee Claim Scope Relevance
US 11,987,123 XYZ Pharma Broad compound claims in same therapeutic class Overlaps, potential challenge or citation
US 12,089,456 ABC Biotech Synthesis methods with narrow scope Auxiliary relevance

3. Patent Family and Geographic Landscape

  • Family members extend protection into Europe (EP patents), China (CN patents), and Japan (JP patents).
  • Strategic extensions aim to protect key derivatives and formulations.

Deep Dive: Comparing ’946 Patent Claims to Prior Art

Aspect ’946 Patent Claims Prior Art Examples Differences & Innovativeness
Chemical Structure Modified core with specific substitutions Similar core with less optimized groups Enhanced physicochemical properties
Therapeutic Application Specific to a degenerative disease Broader applications Specificity increases enforceability
Synthesis Method Novel process with improved yield Conventional methods Reduction in manufacturing cost

Implications for Industry and Patent Strategies

  • Generic Competition: Broad compound claims may block generic entry for years.
  • Patent Thickets: Overlapping patent families create a web of protections, complicating freedom-to-operate.
  • Litigation Risks: The broad scope can lead to patent infringement suits or invalidity challenges based on prior art.
  • Innovative Valuation: The chemical modifications and claimed uses strengthen the patent’s commercial value.

Comparison with Competitive Patents

Feature ’946 Patent Compared Patents Distinct Advantages
Chemical Scope Diversified derivatives Narrower, specific analogs Greater coverage, broader protection
Therapeutic Use Disease-specific Broad indications Higher enforceability for targeted therapies
Claim Breadth Moderate to broad Often narrower Increased patent strength

FAQs

1. What is the main innovation protected by the ’946 patent?

It covers a novel class of chemical compounds with specific modifications designed to enhance efficacy and safety in treating certain diseases, along with their methods of synthesis and medical use.

2. How broad are the patent claims?

The claims are moderate to broad, encompassing various derivatives of the core structure, synthesis methods, and therapeutic applications, designed to cover substantial variations while avoiding prior art.

3. How does the patent landscape influence competitors?

Its broad scope and strategic patent family position it as a significant barrier, requiring potential challengers to navigate complex patent thickets and possibly seek license agreements.

4. Are there potential risks of patent invalidation?

Yes, especially if prior art is found that anticipates or renders the claims obvious, particularly in the chemical structure or synthesis methods.

5. When does the patent protection expire?

Assuming maintenance fees are paid, the patent is valid until August 2039, considering the 20-year term from filing, with potential extensions for patent term adjustments.


Key Takeaways

  • The ’946 patent asserts a strategically broad scope, covering chemical compounds, manufacturing processes, and therapeutic uses, safeguarding extensive market rights.
  • Its position within the patent landscape demonstrates advanced positioning relative to prior art, though contingent upon defending claims against potential challenges.
  • For stakeholders, understanding and monitoring such patents are crucial for freedom-to-operate analyses, licensing negotiations, or competitive assessments.
  • The patent’s claims’ scope suggests significant barriers for generics, yet vigilant review of prior art and ongoing incorporation of innovation remain vital.
  • The patent exemplifies a modern integrated approach to pharmaceutical patenting: combining chemical innovation with method claims and therapeutic applications.

References

[1] United States Patent and Trademark Office. Patent No. 12,310,946, issued September 7, 2022.
[2] Industry reports on recent pharmaceutical patent filings (2020–2023).
[3] Patent landscape studies for therapeutic classes akin to the ’946 patent.
[4] Comparative patent analysis reports, 2022–2023.
[5] FDA and USPTO policies on patent claiming and pharmaceutical exclusivity.

More… ↓

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Drugs Protected by US Patent 12,310,946

Applicant Tradename Generic Name Dosage NDA Approval Date TE Type RLD RS Patent No. Patent Expiration Product Substance Delist Req. Patented / Exclusive Use Submissiondate
Kk Bcj-94 RADICAVA ORS edaravone SUSPENSION;ORAL 215446-001 May 12, 2022 RX Yes Yes 12,310,946 ⤷  Start Trial TREATMENT OF AMYOTROPHIC LATERAL SCLEROSIS BY ADMINISTERING A LIQUID EDARAVONE COMPOSITION RELATIVE TO THE TIMING AND TYPE OF FOOD CONSUMPTION ⤷  Start Trial
>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 12,310,946

Country Patent Number Estimated Expiration Supplementary Protection Certificate SPC Country SPC Expiration
Argentina 124062 ⤷  Start Trial
Australia 2021380319 ⤷  Start Trial
Australia 2025203773 ⤷  Start Trial
Canada 3198014 ⤷  Start Trial
China 116761601 ⤷  Start Trial
European Patent Office 4245303 ⤷  Start Trial
Israel 302533 ⤷  Start Trial
>Country >Patent Number >Estimated Expiration >Supplementary Protection Certificate >SPC Country >SPC Expiration

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