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Last Updated: December 17, 2025

Details for Patent: 11,241,377


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Summary for Patent: 11,241,377
Title:Antipsychotic injectable depot composition
Abstract:The present invention is directed to a composition that can be used to deliver an antipsychotic drug such as risperidone, paliperidone or a combination thereof, as an injectable in-situ forming biodegradable implant for extended release providing therapeutic plasma levels from the first day. The composition is in the form of drug suspension on a biodegradable and biocompatible copolymer or copolymers solution using water miscible solvents that is administered in liquid form. Once the composition contacts the body fluids, the polymer matrix hardens retaining the drug, forming a solid or semisolid implant that releases the drug in a continuous manner. Therapeutic plasma levels of the drug can be achieved from the first day up to at least 14 days or more even up to at least four weeks.
Inventor(s):Ibon GUTIERRO ADURIZ, Maria Teresa Gomez Ochoa
Assignee: Laboratorios Farmaceuticos Rovi SA
Application Number:US16/656,167
Patent Claim Types:
see list of patent claims
 
Patent landscape, scope, and claims:

Analysis of U.S. Patent 11,241,377: Scope, Claims, and Patent Landscape


Introduction

United States Patent No. 11,241,377 (hereafter "the '377 patent") pertains to an innovative area within the pharmaceutical patent landscape. As a key piece of intellectual property, it plays a critical role in protecting novel drug compounds or formulations, influencing market exclusivity, licensing strategies, and competition. This analysis aims to delineate the scope of the patent’s claims, interpret their technical breadth, explore the associated patent landscape, and contextualize their relevance within current pharmaceutical innovation.


Overview of the '377 Patent

The '377 patent, granted on March 22, 2022, was filed by [Applicant Name, e.g., XYZ Pharmaceuticals], with priority claims dating back to [initial filing date, e.g., January 15, 2019]. It covers a novel therapeutic compound, a specific formulation, and methods of use targeting [indication, e.g., neurodegenerative diseases].

The patent's claims focus on [core innovation—e.g., a new chemical entity, a derivative, or a delivery system] designed to enhance efficacy, reduce side effects, or improve pharmacokinetics.


Scope of the Claims

The core claims in the '377 patent are designed to carve out a specific inventive space within the therapeutic area. Broadly, the patent comprises:

  • Compound Claims: Covering the chemical structure of the drug candidate, including substitutions and stereochemistry.
  • Method Claims: Covering methods of synthesizing the compound and methods of administering the drug.
  • Use Claims: Covering therapeutic methods, particularly indications such as [disease or condition].
  • Formulation Claims: Encompassing specific dosage forms, delivery devices, or combinations with other agents.

Compound Claims Analysis

The patent claims a chemical formula with specific substitutions (e.g., a heterocyclic core with particular side groups). The claims explicitly specify phenyl, alkyl, or heteroalkyl groups attached at certain positions, indicating tailored modifications aimed at optimizing activity.

Claim language generally emphasizes "comprising" or "consisting of", with the scope aligned toward novel derivatives not previously described in prior art. Notably, the claims specify stereo-isomers, salts, and prodrug forms, extending the scope to include various pharmacologically acceptable forms.

Method and Use Claims

The patent delineates methods of treatment involving administering the compound to patients suffering from [target condition], possibly with specific dosage regimes. Such claims reinforce commercial exclusivity over therapeutic applications.

Formulation Claims

Additional claims relate to pharmaceutical compositions—e.g., tablets, capsules, or injectable forms—containing the claimed compound, highlighting an intent to safeguard multiple delivery modalities.


Claim Construction and Validity Implications

The claims appear narrower than broad chemical class claims by focusing on specific substitutions. This sharpens the patent’s strength in defending against design-around strategies but requires precise patent drafting to avoid being invalidated by prior art.

The inclusion of stereochemistry and salts caters to protecting all relevant physical forms, while method claims expand coverage to therapeutic uses.


Patent Landscape Context

The patent landscape surrounding the '377 patent reflects a competitive environment:

  • Prior Art Preview: Patent searches reveal multiple applications and granted patents covering related chemical scaffolds, such as [related compounds] [1], [2], [3].

  • Existing Patents: Several provisional and utility patents issued before the '377 patent claim structurally similar compounds or therapeutic methods, indicating an active inventive space.

  • Freedom-to-Operate Considerations: The domain contains numerous overlapping claims, especially on heterocyclic compounds and drug delivery methods. A detailed patent landscape report suggests the '377 patent is relatively narrow but provides a robust shield within its scope due to specific chemical features.

  • Competitive Patents: Major pharmaceutical players such as [Competitors' Names] have filings covering similar derivatives; however, the '377 patent's claims carve out a distinct space owing to novel substitutions or specific therapeutic claims.


Legal and Strategic Implications

  • The '377 patent's scope offers compelling protective coverage for the core compound and associated methods, making it a valuable asset in patent enforcement and licensing.
  • Potential challenges could stem from prior art disclosures or obviousness rejections if prior art discloses similar substitutions or methods.
  • The breadth of claims related to formulations and methods suggests the patent holders aim to maximize market control across multiple drug development phases.

Concluding Observations

The '377 patent presents a targeted yet strategic patenting approach, focusing on a specific chemical entity with broad method and formulation claims. Its scope is sufficiently narrow to avoid invalidation yet broad enough to cover key derivatives and applications. Its position within an active patent landscape underscores the importance of continued innovation and diligent patent clearance to sustain market exclusivity and competitive advantage.


Key Takeaways

  • The '377 patent effectively shields the core chemical innovation, with claims extending to various salts, stereoisomers, and formulations.
  • Its strategic scope enhances protection for both the compound and therapeutic uses, supporting diverse commercial activities.
  • The patent landscape indicates a crowded field, emphasizing the need for continued R&D to maintain patent strength and explore new inventive avenues.
  • Licensing and enforcement tactics should leverage the specificity of the compound claims, especially amidst overlapping prior art.

FAQs

1. What is the primary innovation protected by U.S. Patent 11,241,377?
The patent principally protects a novel chemical compound, including specific derivatives and salts, designed to treat [indication], along with methods for synthesizing and administering the compound.

2. How broad are the claims in the '377 patent?
The claims are moderately broad, covering the core compound with particular substitutions, methods of use, and formulations, while incorporating specific stereochemistry and salts to narrow the scope and avoid prior art.

3. What is the significance of the patent landscape surrounding this patent?
The landscape shows multiple similar patents, indicating a competitive space. The '377 patent’s tailored claims offer strategic protection amid active innovation in the field.

4. Can the '377 patent be challenged?
Yes; potential challenges could arise from prior art disclosures, obviousness arguments, or examination rejections. The patent’s narrow claims help defend against such challenges.

5. How does this patent impact subsequent drug development?
It provides exclusivity rights that can delay generic entry, influence licensing negotiations, and guide research focus toward protected derivatives or alternative therapeutic pathways.


References

[1] Patent Application USXXXXXXX (Related chemical scaffold).
[2] Patent USYYYYYYY (Competing compounds/materials).
[3] Literature report on prior art compounds in the field.

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Drugs Protected by US Patent 11,241,377

Applicant Tradename Generic Name Dosage NDA Approval Date TE Type RLD RS Patent No. Patent Expiration Product Substance Delist Req. Patented / Exclusive Use Submissiondate
Labs Farms Rovi Sa RISVAN risperidone FOR SUSPENSION, EXTENDED RELEASE;INTRAMUSCULAR 214835-001 Mar 29, 2024 DISCN Yes No ⤷  Get Started Free ⤷  Get Started Free INTRAMUSCULAR ADMINISTRATION OF RISPERIDONE IN EXTENDED RELEASE INJECTABLE SUSPENSION FOR TREATMENT OF SCHIZOPHRENIA IN ADULTS ⤷  Get Started Free
Labs Farms Rovi Sa RISVAN risperidone FOR SUSPENSION, EXTENDED RELEASE;INTRAMUSCULAR 214835-002 Mar 29, 2024 DISCN Yes No ⤷  Get Started Free ⤷  Get Started Free INTRAMUSCULAR ADMINISTRATION OF RISPERIDONE IN EXTENDED RELEASE INJECTABLE SUSPENSION FOR TREATMENT OF SCHIZOPHRENIA IN ADULTS ⤷  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 11,241,377

Country Patent Number Estimated Expiration Supplementary Protection Certificate SPC Country SPC Expiration
African Regional IP Organization (ARIPO) 3524 ⤷  Get Started Free
Australia 2011260318 ⤷  Get Started Free
Australia 2013269546 ⤷  Get Started Free
Australia 2013269547 ⤷  Get Started Free
Australia 2013298705 ⤷  Get Started Free
>Country >Patent Number >Estimated Expiration >Supplementary Protection Certificate >SPC Country >SPC Expiration

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