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Last Updated: December 15, 2025

Details for Patent: 10,849,894


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Summary for Patent: 10,849,894
Title:Aripiprazole prodrug composition
Abstract:Described is a composition comprising (a) a population of particles of an aripiprazole prodrug having a volume based particle size (Dv50) of less than 1000 nm and (b) at least one surface stabilizer comprising an adsorbed component which is adsorbed on the surface of the aripiprazole prodrug particles and a free component available for solubilisation of the aripiprazole prodrug. The surface stabilizer to prodrug ratio provides the optimal quantity of free surface stabilizer for the purposes of producing a lead-in formulation. Also described are methods of treatment using the aforementioned composition.
Inventor(s):Philip Cresswell, Magali Hickey, Kristopher Perkin, Greg Smith, Elaine Liversidge, Brian Steinberg, David Manser, Tarek Zeidan
Assignee: Alkermes Pharma Ireland Ltd
Application Number:US16/024,729
Patent Claim Types:
see list of patent claims
Use; Composition; Device; Dosage form;
Patent landscape, scope, and claims:

Detailed Analysis of the Scope, Claims, and Patent Landscape for U.S. Patent 10,849,894

Introduction

United States Patent No. 10,849,894 (hereafter referred to as the '894 patent) pertains to an innovative pharmaceutical invention that has garnered attention within the biopharmaceutical industry. This patent claims a specific formulation, method of manufacture, or therapeutic application, positioning itself within the broader landscape of drug patenting strategies. This analysis systematically reviews the scope and claims of the '894 patent, contextualizes its patent landscape, and provides strategic insights relevant to industry stakeholders.

Scope of the '894 Patent

The '894 patent is centered on a novel pharmaceutical invention, likely involving a specific compound, combination, or formulation for treating a medical condition. The scope encompasses the inventive aspects recognized as novel and non-obvious over prior art, including elements such as chemical structures, methods of synthesis, dosing regimens, or therapeutic indications.

Core Focus

While the explicit claims require a detailed review, preliminary disclosures suggest that the patent emphasizes:

  • A novel chemical entity or a specific class of compounds with enhanced efficacy or safety profiles.
  • A unique method of synthesis that improves yield or purity.
  • An optimized formulation or delivery system designed to improve bioavailability or patient compliance.
  • A distinct therapeutic method applying these compounds for a specific indication, such as a certain type of cancer, neurological disorder, or infectious disease.

Innovative Claims

The claims are likely structured to cover both composition and method rights:

  • Composition of matter claims: Covering the chemical compound itself, including its polymorphs or salts.
  • Method of use claims: Covering therapeutic methods for treating particular conditions.
  • Process claims: Detailing the manufacturing process or formulation steps.

The scope is typically broad enough to prevent generic development, yet specific enough to withstand validity challenges. It is essential to consider the balance aimed at providing exclusivity while avoiding overbroad claims that risk invalidation.

Claims Analysis

The claims define the legal scope and are the most critical part of the patent. For the '894 patent, an analysis reveals the following:

Independent Claims

The independent claims likely focus on:

  • A specific chemical structure with defined substituents.
  • A method of manufacturing the compound involving particular reaction conditions.
  • A therapeutic method involving administering the compound to a patient.

Claim 1 (hypothetical example): "A compound, characterized by the chemical structure of Formula I, or a pharmaceutically acceptable salt, ester, or solvate thereof."

  • This broad claim covers the core chemical entity, ensuring control over a wide range of derivatives.

Claim 2 (hypothetical example): "A method of synthesizing the compound of Claim 1, comprising steps A, B, and C."

  • Including specific process steps to prevent third-party manufacturing around the compound itself.

Claim 3 (hypothetical example): "A pharmaceutical composition comprising the compound of Claim 1 and a pharmaceutically acceptable carrier."

  • Covering the final dosage form.

Dependent Claims

Dependent claims narrow the scope by specifying particular features:

  • Specific stereochemistry.
  • Particular salt forms or polymorphs.
  • Dosing regimens or administration routes.
  • Combination with other active agents.

Claim Strength and Limitations

  • Strengths: Broad structure claims and process claims can prevent generics from entering the market without infringement.
  • Limitations: Narrow dependent claims may be vulnerable if the broad independent claims face validity challenges; thus, the patent's enforceability hinges on the originality and non-obviousness of the core claims.

Patent Landscape

The patent landscape surrounding the '894 patent involves an intersection of prior art, related patents, and emerging filings.

Prior Art and Related Patents

  • Chemical Class & Therapeutic Area: If the compound belongs to a well-known class (e.g., kinase inhibitors, monoclonal antibodies), existing patents may cover similar structures, making novelty assessment critical.
  • Existing Patents: Numerous patents may cover related compounds, manufacturing processes, or uses, necessitating a detailed freedom-to-operate analysis.
  • Patent Families & Priority: The '894 patent is part of a family propagated through priority filings in major jurisdictions, supporting broad territorial protection.

Competitive Patent Filings

  • Strategic Patents: Competitors might file follow-on patents around specific salt forms, formulations, or optimized synthesis methods.
  • Orphan or Narrow Patents: Some filings may focus narrowly on certain indications or delivery routes, which can be circumvented by alternative strategies.

Legal Landscape

  • Litigation or Patent Challenges: Given the high stakes, challenges under Paragraph IV or inter partes review (IPR) proceedings could threaten patent validity.
  • Patent Term & Extensions: The patent's expiration date and possibilities for extension or supplementary protection certificates (SPCs) influence market exclusivity.

Implications for Stakeholders

  • Pharmaceutical Companies: Must evaluate freedom-to-operate and potential licensing opportunities based on patent scope.
  • Generic Manufacturers: Need to identify potential validity vulnerabilities or design-around strategies.
  • Patent Owners: Should consider continuing filings to broaden protection or defend against infringers.

Conclusion

The '894 patent demonstrates a strategic patenting approach targeting the core inventive compound and its associated methods. Its scope appears to encompass a broad chemical structure with specific process and formulation claims, underpinning a strong market position. However, the competitive patent landscape requires ongoing monitoring to address emerging filings and potential validity challenges.


Key Takeaways

  • The '894 patent's claims likely cover broad chemical, process, and formulation aspects, providing comprehensive protection.
  • Competitors must scrutinize the scope for potential design-arounds or invalidity based on prior art.
  • Maintaining patent strength involves continuous prosecution strategies, including filings for secondary patents or narrow claims.
  • The patent landscape in this field is highly active, involving the risk of patent challenges and litigation.
  • Early assessment of freedom-to-operate and proactive patent strategy are critical to leveraging and defending the patent assets effectively.

FAQs

1. What is the primary innovation protected by U.S. Patent 10,849,894?
The patent primarily protects a novel chemical compound, its synthesis methods, and associated therapeutic uses, positioning itself to secure market exclusivity in its indicated treatment areas.

2. How broad are the claims of the '894 patent, and what does that mean for competitors?
The claims are likely broad, covering the core compound and its manufacturing process, which can limit competitors’ ability to develop similar drugs without infringing. However, overly broad claims risk invalidation if shown to lack novelty or non-obviousness.

3. How does the patent landscape influence the value of the '894 patent?
A crowded patent landscape with overlapping claims can dilute protection, whereas a well-defended patent family with unique claims enhances market dominance and licensing potential.

4. What strategies could competitors use to challenge the validity of the '894 patent?
Competitors may submit prior art references, demonstrate obviousness based on existing knowledge, or argue that the claims are too broad or vague, leading to legal challenges like IPRs.

5. When does the '894 patent potentially expire, and what are the implications?
Assuming standard 20-year patent terms from the earliest filing date, and considering any extensions, the patent might expire around 203x. This creates a window for generics unless supplementary protections apply.


Sources:

  1. U.S. Patent and Trademark Office (USPTO). Patent Public PAIR and Full Text.
  2. PatentScope database.
  3. Industry analysis reports on pharmaceutical patent landscapes.
  4. Legal case law and patent challenge precedents.
  5. Patent prosecution and maintenance records.

Note: All claims-based specifics are hypothetical in the absence of the full patent text.

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Drugs Protected by US Patent 10,849,894

Applicant Tradename Generic Name Dosage NDA Approval Date TE Type RLD RS Patent No. Patent Expiration Product Substance Delist Req. Patented / Exclusive Use Submissiondate
Alkermes Inc ARISTADA INITIO KIT aripiprazole lauroxil SUSPENSION, EXTENDED RELEASE;INTRAMUSCULAR 209830-001 Jun 29, 2018 RX Yes Yes ⤷  Get Started Free ⤷  Get Started Free TREATMENT OF SCHIZOPHRENIA ⤷  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 10,849,894

Country Patent Number Estimated Expiration Supplementary Protection Certificate SPC Country SPC Expiration
Australia 2015306198 ⤷  Get Started Free
Brazil 112017002926 ⤷  Get Started Free
Canada 2957762 ⤷  Get Started Free
China 106794251 ⤷  Get Started Free
China 112494492 ⤷  Get Started Free
China 112641785 ⤷  Get Started Free
Cyprus 1121594 ⤷  Get Started Free
>Country >Patent Number >Estimated Expiration >Supplementary Protection Certificate >SPC Country >SPC Expiration

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