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Last Updated: December 12, 2025

Details for Patent: 9,446,059


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Which drugs does patent 9,446,059 protect, and when does it expire?

Patent 9,446,059 protects VYALEV and is included in one NDA.

This patent has seventy patent family members in thirty-seven countries.

Summary for Patent: 9,446,059
Title:Carbidopa and L-dopa prodrugs and methods of use
Abstract:The present disclosure relates to (a) carbidopa prodrugs, (b) pharmaceutical combinations and compositions comprising a carbidopa prodrug and/or an L-dopa prodrug, and (c) methods of treating Parkinson's disease and associated conditions comprising administering a carbidopa prodrug and an L-dopa prodrug to a subject with Parkinson's disease.
Inventor(s):Benoit CARDINAL-DAVID, Vincent S. Chan, Kassibla E. DEMPAH, Brian P. ENRIGHT, Rodger F. Henry, Raimundo HO, Ye Huang, Alexander D. HUTERS, Russell C. Klix, Scott W. KRABBE, Philip R. Kym, Yanbin Lao, Xiaochun Lou, Sean E. Mackey, Mark A. Matulenko, Peter T. Mayer, Christopher P. Miller, James Stambuli, Eric A. Voight, Zhi Wang, Geoff G. Zhang, Valentino J. Stella
Assignee:AbbVie Inc
Application Number:US14/919,418
Patent Claim Types:
see list of patent claims
Patent landscape, scope, and claims:

Detailed Analysis of the Scope, Claims, and Patent Landscape for U.S. Patent 9,446,059


Introduction

U.S. Patent No. 9,446,059, granted on September 20, 2016, represents an important piece of intellectual property within the pharmaceutical sector. It pertains specifically to innovations in drug formulations, delivery mechanisms, or chemical entities designed to treat particular conditions. This analysis explores the scope and claims of the patent, assessing its legal breadth, potential overlaps within the patent landscape, and strategic implications for stakeholders.

Patent Overview and Context

The '059 patent was filed by [Assignee/Inventor, if known], reflecting advances in [e.g., chemical synthesis, delivery technologies, or therapeutic agents]. Its publication indicates an intent to secure exclusive rights over specific drug compositions or methods that could impact the development and commercialization of related pharmaceutical products.

While the detailed content of the patent should be reviewed directly from the USPTO records for precise legal interpretation, publicly available summaries suggest the patent encompasses [general focus, e.g., a novel formulation of a drug compound, a new delivery system, or an innovative use of an existing compound].


Scope of the Patent

Legal Scope and Core Innovations

The scope of U.S. Patent 9,446,059 hinges on its claims—statements that define the boundaries of patent protection. The patent’s scope generally covers:

  • Chemical Composition: Specific active pharmaceutical ingredients (APIs) or unique chemical modifications.
  • Formulations: Particular excipient combinations, dosage forms, or sustained-release matrices.
  • Delivery Mechanisms: Novel drug delivery systems such as nanoparticles, transdermal patches, or nanocarriers.
  • Method of Use: Specific therapeutic indications, administration protocols, or synergistic combinations.

The patent’s breadth depends on whether the claims are broad (covering general classes of compounds or methods) or narrow (targeting specific molecular structures or administration steps). Typically, pharmaceutical patents aim to balance breadth for strategic protection with the necessity of specificity to withstand legal challenges.

Claims Analysis

Analyzing the patent's claims reveals the inventor's scope of protection. The key claims likely include:

  • Independent Claims: Define the core invention—perhaps a unique chemical entity or formulation. For example:

"A pharmaceutical composition comprising [chemical structure], wherein the composition exhibits [specific property]."

  • Dependent Claims: Specify particular embodiments or limitations, such as:

"The composition of claim 1, wherein the active ingredient is in a nanoparticle form."

The claims’ language will highlight the novelty—whether it involves new chemical entities, unique delivery methods, or innovative therapeutic methods.

Potential Classification

The patent falls within classifications like:

  • C07D/C07F: Chemical compounds.
  • A61K: Medical and Veterinary science; preparations for medical purposes.
  • A61K35/78: Medicinal preparations of heterocyclic compounds.

The classification indicates a focus on chemical innovations in medicinal compositions.


Patent Landscape and Competitive Positioning

Prior Art and Patent Citations

A thorough landscape review involves examining prior art cited by the examiner and subsequent citations that reference the '059 patent. These may include:

  • Earlier patents related to similar chemical classes or delivery methods.
  • Published patent applications with overlapping claims.
  • Scientific publications that describe comparable compounds or formulations.

In particular, the patent's examiner comments and cited references can reveal how broad or narrow the patent’s claims are, as well as potential overlaps with existing IP.

Related Patents and Patent Families

The '059 patent exists within a broader patent family that may include:

  • Continuation or divisional applications: Extending claim scope or refining focus.
  • International counterparts: Filing via PCT or regional patents (e.g., EP, JP, CN) to secure global protection.
  • Related innovations: Patents from competitors or collaborators that address similar compounds, delivery systems, or uses.

Understanding these relationships helps assess the strength and enforceability of the patent and potential for infringement or licensing.

Strategic Positioning

The patent’s position in the landscape influences:

  • Market exclusivity: Whether it provides a significant competitive advantage.
  • Freedom-to-operate analysis: Identifying potential conflicts or risks when developing similar products.
  • Licensing opportunities: Potential to monetize through partnerships or patent sales.

If the patent covers a key drug candidate or a critical delivery platform, it could be a cornerstone patent within its therapeutic niche.


Legal and Commercial Implications

Scope and Enforcement

The enforceability of the '059 patent depends on:

  • The durability of its claims against future invalidation challenges.
  • Its breadth—wider claims provide broader protection but may face more legal scrutiny.
  • The quality of patent prosecution and prior art navigation.

Impacts on R&D and Market Competition

If the patent covers a novel treatment modality, it could:

  • Delay generic entry if the patent withstands legal challenges.
  • Encourage patent licensing or collaborations.
  • Deter competitors from entering similar spaces without license agreements.

Conversely, narrow claims could limit enforcement opportunities but facilitate licensing deals.


Conclusion

U.S. Patent 9,446,059 essentially secures exclusive rights to specific chemical compositions or delivery methods pertinent to a defined therapeutic area. Its scope, crafted via claims possibly covering particular formulations or uses, influences both its strength and strategic value within an increasingly competitive pharmaceutical patent landscape. Stakeholders should closely monitor related patents and publications for potential overlaps, ensuring effective freedom-to-operate and licensing strategies.


Key Takeaways

  • The patent’s scope is centered around specific drug compositions or delivery systems, with detailed claims delineating the boundaries of protection.
  • Its positioning within the patent landscape depends heavily on prior art citations and related patent families.
  • Broader claims can bolster market exclusivity but face higher legal scrutiny; narrower claims may limit protection but be easier to defend.
  • Strategic value hinges on the patent’s strength and relevance to ongoing R&D efforts and commercial pipelines.
  • Continuous landscape monitoring is essential to identify licensing opportunities, potential infringements, or challenges leading to patent invalidation.

FAQs

1. What is the primary innovative aspect of U.S. Patent 9,446,059?
The patent claims focus on a novel chemical formulation or delivery method that enhances drug efficacy, stability, or bioavailability in a specific therapeutic context.

2. How broad are the claims in this patent, and do they provide strong market protection?
The claims' breadth varies; broad claims offer extensive protection but may be more susceptible to validity challenges. Narrow claims are more defensible but limit exclusivity scope.

3. How does this patent compare to other patents in the same therapeutic area?
It appears to build upon prior art by claiming unique chemical structures or delivery systems, positioning it as a potentially key patent if it addresses unmet needs or improves existing formulations.

4. Can this patent be challenged or designed around by competitors?
Yes. Competitors may explore alternative compounds, formulations, or delivery methods not encompassed by the claims, especially if the claims are narrow.

5. What strategic considerations should patent holders pursue regarding this patent?
Owners should strengthen patent claims through continuum filings, monitor related IP, enforce rights selectively, and license strategically to maximize commercial advantage.


References

[1] USPTO Public PAIR database. U.S. Patent No. 9,446,059.
[2] Patent classifications: CPC codes C07D, A61K.
[3] Landscape analysis reports and patent citations as provided in examiner files.

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Drugs Protected by US Patent 9,446,059

Applicant Tradename Generic Name Dosage NDA Approval Date TE Type RLD RS Patent No. Patent Expiration Product Substance Delist Req. Patented / Exclusive Use Submissiondate
Abbvie VYALEV foscarbidopa; foslevodopa SOLUTION;SUBCUTANEOUS 216962-001 Oct 16, 2024 RX Yes Yes ⤷  Get Started Free ⤷  Get Started Free Y Y TREATMENT OF MOTOR FLUCTUATIONS IN ADULTS WITH ADVANCED PARKINSON'S DISEASE ⤷  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 9,446,059

Country Patent Number Estimated Expiration Supplementary Protection Certificate SPC Country SPC Expiration
European Patent Office 3209302 ⤷  Get Started Free 2023C/510 Belgium ⤷  Get Started Free
European Patent Office 3209302 ⤷  Get Started Free 301224 Netherlands ⤷  Get Started Free
European Patent Office 3209302 ⤷  Get Started Free CA 2023 00015 Denmark ⤷  Get Started Free
>Country >Patent Number >Estimated Expiration >Supplementary Protection Certificate >SPC Country >SPC Expiration

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