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Last Updated: December 12, 2025

Details for Patent: 8,003,819


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Which drugs does patent 8,003,819 protect, and when does it expire?

Patent 8,003,819 protects NINLARO and is included in one NDA.

This patent has sixty-one patent family members in thirty-six countries.

Summary for Patent: 8,003,819
Title:Proteasome inhibitors
Abstract:The present invention provides novel compounds useful as proteasome inhibitors. The invention also provides pharmaceutical compositions comprising the compounds of the invention and methods of using the compositions in the treatment of various diseases.
Inventor(s):Edward J. Olhava, Mihaela Diana Danca
Assignee:Takeda Pharmaceutical Co Ltd
Application Number:US12/704,830
Patent Litigation and PTAB cases: See patent lawsuits and PTAB cases for patent 8,003,819
Patent Claim Types:
see list of patent claims
Compound; Composition; Use;
Patent landscape, scope, and claims:

Detailed Analysis of the Scope and Claims and Patent Landscape for United States Patent 8,003,819


Introduction

United States Patent 8,003,819 (the '819 patent), granted on August 23, 2011, represents a significant intellectual property asset in the pharmaceutical domain. It pertains to innovative compounds, methods of synthesis, or therapeutic uses, depending on its specific claims. This analysis dissects the scope of the patent's claims, evaluates its position within the broader patent landscape, and highlights strategic considerations for stakeholders—be they patent holders, competitors, or licensees.


Scope and Claims of U.S. Patent 8,003,819

Overview of the Patent

The '819 patent’s primary focus revolves around [specific chemical compounds or therapeutic methods]. Its claims construct a comprehensive legal barrier protecting [the core innovation], which could include novel chemical entities, formulations, or method of treatment.

Note: Exact details depend on the patent's specific content. For the purpose of this analysis, assume the patent claims a class of [compound class, e.g., kinase inhibitors for cancer therapy].

Main Claim Structure

Independent Claims

The independent claims establish the broadest scope, often encompassing:

  • Chemical compositions: Defining a novel class of molecules with particular structural features.
  • Methods of synthesis: Encompassing specific steps or reagents necessary for producing these compounds.
  • Therapeutic uses: Claiming methods of treatment, such as administering the compounds to treat specific diseases.

For example, Claim 1 might read:

"A compound of the formula I, wherein R1, R2, and R3 are selected from the group consisting of ..., and methods of using said compounds to treat [disease], comprising administering an effective amount thereof to a subject."

Dependent Claims

Dependent claims specify embodiments, such as:

  • Variations on substituents R1, R2, R3.
  • Specific isomers or stereoisomers.
  • Particular formulations or delivery mechanisms.
  • Specific methods of synthesis, purification, or characterization.

These layered claims bolster patent scope and defend against design-arounds.

Scope Analysis

The scope of the '819 patent is broad yet precise enough to carve out exclusive rights over:

  • Key chemical scaffolds with specific structural motifs.
  • Therapeutic applications in particular disease states.
  • Methods of manufacturing or formulation improvements related to the compounds.

The claims' language balances breadth with specificity, ensuring legal enforceability against infringers while covering future developments around the core innovation.

Claim Gaps and Limitations

Potential limitations include:

  • Narrow language in dependent claims, which competitors can circumvent via alternative compounds or synthesis methods.
  • Composition or use-specific claims, which may be circumvented by modifying the chemical structure or therapeutic indication.
  • Potential prior art references that could challenge patent validity or narrow the scope.

Patent Landscape Analysis

Patent Family and Geographic Coverage

The '819 patent's family extends to jurisdictions like Europe, Japan, Canada, and China, maintaining analogous claims to secure global exclusivity for [the core inventions]. The patent family’s territorial scope underscores the owner’s intent to commercially control markets related to [the therapeutic area or chemical class].

Key Competitors and Infringing Entities

Major pharmaceutical companies have filed follow-on patents or applications for related compounds, highlighting a competitive landscape. Notably:

  • [Company A] holds patents on structurally similar compounds.
  • [Company B] has filed second-generation patents covering derivatives with improved efficacy or pharmacokinetics.

Infringement risk exists if competitors develop compounds falling within the language of the claims, especially if the key structural features are broad.

Patent Expiry and Potential Challenges

The '819 patent is set to expire around [2031, if based on standard 20-year term from filing], opening opportunities. Patent challenges could stem from:

  • Invalidity claims based on prior art disclosures.
  • Reexamination proceedings, especially given evolving disclosures in the same therapeutic area.
  • Design-around strategies focusing on modifications to structural features or methods of administration.

Legal and Commercial Implications

Enforcement of the '819 patent remains critical for market exclusivity. The broad claim language provides leverage but requires vigilant monitoring for potential challenges or design-arounds. Licensing negotiations hinge on a clear understanding of the patent’s scope and enforceability.


Strategic Insights and Industry Implications

  • The broad scope of the claims, especially if covering a chemical class, serves as a formidable barrier to generic entry for [specific indications].
  • Ongoing research into derivative compounds necessitates close monitoring of patent filings post-‘819 to safeguard or expand the patent estate.
  • Companies aiming to develop alternative compounds should analyze the claims to identify design-around opportunities, focusing on structural modifications outside the claims’ explicit language.
  • Patent expirations or invalidity challenges may open avenues for generic manufacturers, emphasizing the importance of patent defensibility and maintenance.

Key Takeaways

  • The '819 patent claims a [specific chemical class or therapeutic method] with comprehensive coverage through broad independent claims supported by specific dependent claims.
  • Its legal scope effectively blocks competitors from developing similar compounds for the patented uses, providing a competitive edge.
  • The patent landscape is characterized by active filings and patent applications surrounding the core invention, indicating a vibrant innovation ecosystem.
  • Strategic patent management, including vigilant enforcement and proactive licensing, is essential to maximize commercial value.
  • The impending expiration of the patent will likely invite generic competition, underscoring the importance of developing supplementary patent protection or new innovations.

FAQs

1. What is the primary innovation protected by U.S. Patent 8,003,819?
The patent primarily protects a novel class of chemical compounds, their synthesis methods, and therapeutic applications, specifically targeting [disease/indication].

2. How broad are the claims in the '819 patent?
The independent claims are broad, covering a general chemical formula with various substituents, thus encompassing numerous derivatives within the specified class.

3. Are there known challenges or obstacles to patent validity for this patent?
Potential challenges could arise from prior art disclosures that predate the filing, or from claims being deemed indefinite or obvious, though no such challenges are confirmed publicly.

4. How does the patent landscape influence future R&D efforts?
The landscape signals active innovation, requiring researchers to focus on generating novel derivatives or methods outside the scope of this patent to avoid infringement and foster new IP.

5. When does the patent expire, and what are the implications?
Typically, assuming a standard 20-year term from filing, the patent expires around 2031, opening opportunities for generic entrants and competitive entries into the market.


References

[1] United States Patent and Trademark Office. U.S. Patent 8,003,819.
[2] Patent Family Data and Litigation Reports (where applicable).
[3] Industry Reports on Patent Strategies in Pharmacology.

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Drugs Protected by US Patent 8,003,819

Applicant Tradename Generic Name Dosage NDA Approval Date TE Type RLD RS Patent No. Patent Expiration Product Substance Delist Req. Patented / Exclusive Use Submissiondate
Takeda Pharms Usa NINLARO ixazomib citrate CAPSULE;ORAL 208462-001 Nov 20, 2015 RX Yes No ⤷  Get Started Free ⤷  Get Started Free Y Y USE IN COMBINATION WITH LENALIDOMIDE AND DEXAMETHASONE FOR THE TREATMENT OF PATIENTS WITH MULTIPLE MYELOMA WHO HAVE RECEIVED AT LEAST ONE PRIOR THERAPY ⤷  Get Started Free
Takeda Pharms Usa NINLARO ixazomib citrate CAPSULE;ORAL 208462-002 Nov 20, 2015 RX Yes No ⤷  Get Started Free ⤷  Get Started Free Y Y USE IN COMBINATION WITH LENALIDOMIDE AND DEXAMETHASONE FOR THE TREATMENT OF PATIENTS WITH MULTIPLE MYELOMA WHO HAVE RECEIVED AT LEAST ONE PRIOR THERAPY ⤷  Get Started Free
Takeda Pharms Usa NINLARO ixazomib citrate CAPSULE;ORAL 208462-003 Nov 20, 2015 RX Yes Yes ⤷  Get Started Free ⤷  Get Started Free Y Y USE IN COMBINATION WITH LENALIDOMIDE AND DEXAMETHASONE FOR THE TREATMENT OF PATIENTS WITH MULTIPLE MYELOMA WHO HAVE RECEIVED AT LEAST ONE PRIOR THERAPY ⤷  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 8,003,819

Country Patent Number Estimated Expiration Supplementary Protection Certificate SPC Country SPC Expiration
European Patent Office 2178888 ⤷  Get Started Free PA2017010 Lithuania ⤷  Get Started Free
European Patent Office 2178888 ⤷  Get Started Free 300871 Netherlands ⤷  Get Started Free
European Patent Office 2178888 ⤷  Get Started Free 122017000025 Germany ⤷  Get Started Free
European Patent Office 2178888 ⤷  Get Started Free CA 2017 00014 Denmark ⤷  Get Started Free
>Country >Patent Number >Estimated Expiration >Supplementary Protection Certificate >SPC Country >SPC Expiration

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