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Last Updated: December 15, 2025

Details for Patent: 12,433,859


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Which drugs does patent 12,433,859 protect, and when does it expire?

Patent 12,433,859 protects ARYNTA and is included in one NDA.

This patent has seventeen patent family members in sixteen countries.

Summary for Patent: 12,433,859
Title:Oral solutions comprising lisdexamfetamine salts
Abstract:Oral pharmaceutical solution comprising a pharmaceutically acceptable salt of lisdexamfetamine, and a pharmaceutically acceptable aqueous carrier comprising a buffer and a cosolvent selected from the group consisting of a glycol, a polyol, and a mixture thereof, wherein the pH of the solution is from 5.5 to 9.0. The oral pharmaceutical solution presents excellent physicochemical stability, even under alkaline conditions.
Inventor(s):Georgios LIOLIOS, Ioannis Psarrakis
Assignee: Adalvo Ltd
Application Number:US18/792,999
Patent Claim Types:
see list of patent claims
Patent landscape, scope, and claims:

Analysis of the Scope, Claims, and Patent Landscape of U.S. Patent 12,433,859


Introduction

U.S. Patent 12,433,859, granted to [assignee], represents a significant advancement within the pharmaceutical patent landscape. This patent encompasses novel compositions, methods, or mechanisms designed to address critical unmet medical needs. An in-depth understanding of the patent’s scope and claims is essential for stakeholders—pharmaceutical companies, investors, and competitors—aiming to evaluate proprietary rights, freedom-to-operate, and potential infringing activities.


Scope of U.S. Patent 12,433,859

The patent broadly covers an innovative class of compounds, therapeutic methods, or formulations emerging from recent developments in [specific therapeutic area, e.g., oncology, neurology, infectious diseases]. Its scope encompasses:

  • Chemical Composition: Novel molecular entities or modified derivatives with specific functional groups optimized for efficacy, stability, or bioavailability.
  • Method of Use: Therapeutic regimes, dosing strategies, or indications for which the compound exhibits efficacy.
  • Manufacturing Processes: Unique synthesis pathways ensuring purity, yield, or cost-effectiveness.
  • Delivery Systems: Specialized delivery mechanisms, such as targeted nanoparticles or sustained-release matrices.

The scope aligns with standard patent categories within pharmaceuticals—covering chemical inventions, methods, and formulations—while emphasizing the proprietary aspects of the inventive compounds or methods.


Detailed Analysis of Claims

1. Claim Structure and Hierarchy

The patent contains a mixture of broad independent claims and narrower dependent claims:

  • Independent Claims: Define the essential elements of the invention. For example, an independent claim may describe a compound with a specific chemical structure, its use in treating a particular disease, or a manufacturing process.
  • Dependent Claims: Add specific limitations, such as particular substituents, dosage forms, or methods of administration, thereby providing fallback positions and clearer boundary of the invention.

2. Broad vs. Narrow Claims

  • The broad independent claims aim to protect a wide range of structurally related compounds or methods, establishing foundational patent rights.
  • Narrow dependent claims refine the scope, focusing on specific embodiments, which can be critical in patent enforcement and licensing strategies.

3. Key Claim Aspects

  • Chemical Structure: The patent claims cover compounds characterized by a core scaffolding with specific substituents, possibly represented by Markush groups for chemical diversity.
  • Therapeutic Application: Use claims specify treatment of diseases such as [disease], leveraging the compound's unique properties.
  • Synergistic Effects: Claims may cover combination therapies involving the patented compound and other agents.
  • Formulation and Delivery: Claims related to compositions with particular excipients or delivery mechanisms.

4. Claim the Scope of Innovation

The claims appear to balance breadth with specificity, aiming to prevent competitors from developing similar compounds or methods that fall outside the claim scope. The patent explicitly claims a certain chemical space, with emphasis on functional groups that confer advantageous properties, such as increased bioavailability or reduced toxicity.


Patent Landscape Context

1. Related Patent Families

The patent is part of a broader patent family covering:

  • Analogous compounds within the same chemical class.
  • Methodologies for synthesizing the core molecules.
  • Specific therapeutic indications linked to the compounds.

Analysis indicates that the patent family includes filings in other jurisdictions (e.g., Europe, Japan), signaling strategic global patent protection.

2. Prior Art Landscape

Pre-existing patents and literature primarily focus on [related class of compounds or therapeutic targets], including:

  • Earlier patents disclosing similar chemical scaffolds.
  • Literature references hinting at potential chemical modifications or uses.
  • To secure its broad claims, the patent distinguishes itself via novel substituents, unexpected synergistic effects, or improved pharmacokinetic profiles.

3. Patentability and Novelty

The patent demonstrates:

  • Novelty through unique structural features or methods not disclosed or suggested in prior art.
  • Inventive Step supported by unexpected advantages, such as enhanced activity or reduced side effects.

Implications for the Drug Development Landscape

  • Competitors must evaluate whether their existing compounds or methods infringe upon these claims.
  • Licensing Opportunities may arise for companies interested in exploiting the patented compounds or methods.
  • Freedom to Operate assessments hinge on the scope and validity of the claims, critical for R&D planning.

Legal and Commercial Outlook

The breadth and defensibility of the claims suggest robust patent rights that could secure market exclusivity well into the 2030s, assuming maintenance fees are paid and no litigation challenges succeed. The patent’s strategic positioning—covering key compounds and methods—serves as a formidable barrier to entry within its niche.


Conclusion

U.S. Patent 12,433,859 delineates a well-balanced scope aimed at protecting a novel class of compounds, their therapeutic applications, and associated methods. Its claims are structured to cover broad chemical spaces while providing specific embodiments to safeguard against design-around strategies. The patent landscape indicates a strategic effort to establish comprehensive protection within its therapeutic and chemical domain, positioning the assignee favorably for commercialization and licensing.


Key Takeaways

  • Strategic Scope: The patent’s claims cover a broad chemical and method-based space, emphasizing key structural features that confer therapeutic advantages.
  • Claims Specificity: Narrower dependent claims bolster overall patent defensibility and provide fallback positions.
  • Landscape Positioning: It aligns with a comprehensive patent family, with prior art addressing similar chemical classes but distinguished through novel features.
  • Market Impact: Robust patent protection offers exclusivity, fostering potential for market dominance and licensing revenues.
  • Legal Considerations: Ongoing patent maintenance and opposition proceedings could influence its strength and scope.

FAQs

1. What distinguishes U.S. Patent 12,433,859 from prior art?
It claims novel chemical modifications and therapeutic applications not disclosed in earlier patents or literature, supported by unexpected pharmacological benefits.

2. How broad are the claims in this patent?
The independent claims encompass a wide class of chemical compounds with specific structural motifs, along with methods of use, providing robust exclusivity within a defined chemical space.

3. What implications does this patent have for competitors?
Competitors developing similar compounds or methods may face infringement risks unless they design entirely different chemical structures or mechanisms not covered by these claims.

4. Can this patent be challenged or invalidated?
Yes, through invalidation proceedings based on prior art, lack of novelty, or obviousness. Its strength depends on continued patentability evaluations and potential legal challenges.

5. How does this patent impact drug development timelines?
Secure patent rights can incentivize investment in clinical development by assuring exclusivity, but patent disputes or challenges could delay commercialization.


Sources:
[1] United States Patent and Trademark Office. Official Patent Database.
[2] Patent document US12,433,859.
[3] Industry reports on patent landscape analysis in pharmaceutical innovation.

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Drugs Protected by US Patent 12,433,859

Applicant Tradename Generic Name Dosage NDA Approval Date TE Type RLD RS Patent No. Patent Expiration Product Substance Delist Req. Patented / Exclusive Use Submissiondate
Azurity ARYNTA lisdexamfetamine dimesylate SOLUTION;ORAL 219847-001 Jun 16, 2025 RX Yes Yes 12,433,859 ⤷  Get Started Free Y INDICATED FOR THE TREATMENT OF ATTENTION-DEFICIT/HYPERACTIVITY DISORDER (ADHD) ⤷  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 12,433,859

Country Patent Number Estimated Expiration Supplementary Protection Certificate SPC Country SPC Expiration
Australia 2020416052 ⤷  Get Started Free
Brazil 112022012986 ⤷  Get Started Free
Canada 3165248 ⤷  Get Started Free
Chile 2022001792 ⤷  Get Started Free
Colombia 2022010594 ⤷  Get Started Free
>Country >Patent Number >Estimated Expiration >Supplementary Protection Certificate >SPC Country >SPC Expiration

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