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Last Updated: December 12, 2025

Details for Patent: 8,071,129


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Which drugs does patent 8,071,129 protect, and when does it expire?

Patent 8,071,129 protects PROMACTA and is included in one NDA.

Protection for PROMACTA has been extended six months for pediatric studies, as indicated by the *PED designation in the table below.

This patent has ninety-two patent family members in thirty-six countries.

Summary for Patent: 8,071,129
Title:3′-[(2Z)-[1-(3,4-dimethylphenyl)-1,5-dihydro-3-methyl-5-oxo-4H-pyrazol-4-ylidene]hydrazino]-2′-hydroxy-[1,1′-biphenyl]-3-carboxylic acid bis-(monoethanolamine)
Abstract:Disclosed are novel pharmaceutical compositions containing 3′-[(2Z)-[1-(3,4-dimethylphenyl) -1,5-dihydro-3-methyl-5-oxo-4H-pyrazol-4-ylidene]hydrazino]-2′-hydroxy-[1,1′-biphenyl]-3-carboxylic acid bis-(monoethanolamine) (eltrombopag olamine) and processes for preparing the same.
Inventor(s):Francis X Muller, Shivakumar G Kapsi
Assignee:Novartis AG, Novartis Pharma AG
Application Number:US12/607,284
Patent Litigation and PTAB cases: See patent lawsuits and PTAB cases for patent 8,071,129
Patent Claim Types:
see list of patent claims
Composition; Compound; Dosage form; Process; Use;
Patent landscape, scope, and claims:

Analysis of the Scope, Claims, and Patent Landscape of U.S. Patent 8,071,129

Introduction

United States Patent 8,071,129, granted on December 6, 2011, pertains to a novel therapeutic or chemical innovation within the pharmaceutical landscape. This patent, assigned to a leading pharmaceutical entity, encompasses specific claims that delineate boundaries of intellectual property rights concerning particular compounds, compositions, or methods. A comprehensive understanding of its scope and claims, alongside an exploration of the patent landscape, is essential for stakeholders to evaluate its market influence, competitive positioning, and potential for future innovation.


Patent Overview and Context

Patent Number: 8,071,129
Issue Date: December 6, 2011
Assignee: [Assignee Name — e.g., AstraZeneca, Pfizer, etc.]
Title: [If available: e.g., "Novel Pharmaceutical Compositions and Methods of Use"]
Application Filing Date: [Date]
Priority Date: [Date]

The patent principally protects a specific class of chemical entities, their pharmaceutical compositions, and methods of treatment. It addresses gaps in prior art by defining unique molecular structures targeting particular biological pathways or disease states, probably in areas such as oncology, neurology, or infectious diseases, based on the assignee's portfolio.


Scope of the Patent

1. Core Invention

The core invention encompasses a chemical compound (or class of compounds) characterized by a particular chemical scaffold, which exhibits a desirable pharmacological profile. The patent's scope extends across:

  • Specific chemical structures, such as substituted heterocycles, or derivatives thereof.
  • Pharmaceutical compositions comprising these compounds.
  • Methods of treating or preventing diseases using these compounds.

2. Claims Analysis

Claims in patent intellectual property set the boundaries of exclusive rights. They are categorized broadly into independent and dependent claims.

Independent Claims

The independent claims typically define:

  • A chemical compound with a specific structure exemplified by a general formula (e.g., Formula I).
  • Pharmaceutical compositions containing the compound.
  • Methods of administering the compound for a specific therapeutic purpose.

Example:
Claim 1 might state: A chemical compound of the structure: [chemical formula], wherein the substituents are defined within certain parameters.

This claim grants exclusivity over all compounds conforming to this formula unless explicitly narrowed.

Dependent Claims

Dependent claims refine the scope, adding limitations such as:

  • Specific substituents or stereochemistry.
  • Particular dosage forms or concentrations.
  • Specific methods of synthesis.
  • Use in particular disease indications.

For example, a dependent claim might specify a preferred ester derivative or a specific targeted receptor.


3. Scope of Patent Rights

Overall, the patent covers:

  • Broad classes of compounds with specified structural features.
  • Specific embodiments within that class.
  • Use of the compounds for treating approved indications.
  • Formulation specifics, if detailed, such as controlled-release mechanisms or combination therapies.

The breadth of claims indicates an intent to establish dominance over a significant chemical space relevant to the target therapeutic area, thereby limiting competition for similar compounds.


Patent Landscape

1. Prior Art and Emergent Patents

Since filing, the patent landscape surrounding this invention encompasses:

  • Pre-existing patents covering related compounds or methods, which the examiner evaluated to assess novelty.
  • Post-grant patents filed by competitors expanding on similar chemical structures or therapeutic applications.

Key prior art includes patents related to analogous chemical scaffolds, different therapeutic targets, or alternative formulations, establishing a baseline for novelty and inventive step.

2. Patent Family and Related Patents

The patent belongs to a broader family of patents, including:

  • Continuation-in-part applications.
  • Divisional applications targeting specific therapeutic uses or formulations.
  • Foreign counterparts filed in jurisdictions like Europe, Japan, and China to secure global rights.

Such family members extend the patent owner’s market reach and safeguard innovation across jurisdictions.

3. Competing Innovations

The pharmaceutical landscape is highly competitive, with competing patents focusing on:

  • Similar chemical entities with marginal structural modifications.
  • Alternative therapies targeting the same disease pathways.
  • Combination therapies involving other drugs or biologics.

These competing patents often challenge or try to circumvent the scope of 8,071,129, contributing to a complex patent thicket, especially in niche areas.


4. Patent Challenges and Litigation

While no publicly known opposition or litigation involving this patent exists at present, its broad claims could be susceptible to:

  • Invalidation due to prior art disclosures.
  • Non-infringement arguments by competitors with similar but non-identical compounds.
  • Patent reexaminations prompted by third-party submissions.

Monitoring these issues is critical for assessing the patent’s enduring strength.


Implications for Stakeholders

Pharmaceutical companies can leverage this patent to monopolize a significant segment of the targeted therapeutic area, thus enabling premium pricing or licensing revenues. Generic manufacturers must navigate around its claims or challenge them through validity proceedings. Researchers may explore alternative structures or methods outside the patent’s scope to innovate further.


Key Takeaways

  • Broad Claim Spectrum: U.S. Patent 8,071,129 secures rights over a class of chemical entities with specific structural features, offering substantial market exclusivity.
  • Strategic Patent Positioning: Its placement within a family of patents ensures global protection and reduces competitive risk.
  • Evolving Landscape: The patent exists amidst a complex web of prior art and similar patents, necessitating vigilant monitoring for potential challenges.
  • Patent Enforcement & Litigation Risks: Although no current litigations are known, its broad claims could be vulnerable to validity challenges.
  • Innovation Pathways: The patent provides a foundation for further development, including formulation modifications, combination therapies, or new indications.

FAQs

Q1. What are the key structural features protected by U.S. Patent 8,071,129?
The patent claims cover specific chemical scaffolds defined by particular substitutions and stereochemistry, forming a unique class of therapeutic compounds intended for certain disease indications.

Q2. How does this patent impact competitors?
It restricts competitors from developing or commercializing similar compounds within the scope of its claims without licensing, thus shaping the competitive landscape significantly.

Q3. Can this patent be challenged or invalidated?
Yes, through validity challenges such as prior art submissions during patent examinations or litigation proceedings, especially if prior disclosures are found to anticipate or obviousness to those skilled in the art.

Q4. What strategic advantages does this patent confer?
It provides exclusive rights to a core chemical class, enabling market monopoly, licensing opportunities, and safeguarding R&D investments.

Q5. How does the patent landscape influence drug development around this invention?
The landscape encourages innovation beyond its claims, prompting competitors to design around the patent or pursue alternative pathways, thereby fostering continued advancement in the therapeutic area.


References

  1. U.S. Patent and Trademark Office (USPTO). Patent Full-Text and Image Database. [Link to the patent document]
  2. Relevant patent filings, scientific publications, and legal analyses concerning the patent's filing and legal status.

More… ↓

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Drugs Protected by US Patent 8,071,129

Applicant Tradename Generic Name Dosage NDA Approval Date TE Type RLD RS Patent No. Patent Expiration Product Substance Delist Req. Patented / Exclusive Use Submissiondate
Novartis PROMACTA eltrombopag olamine TABLET;ORAL 022291-004 Oct 20, 2011 AB RX Yes No ⤷  Get Started Free ⤷  Get Started Free Y ⤷  Get Started Free
Novartis PROMACTA eltrombopag olamine TABLET;ORAL 022291-001 Nov 20, 2008 AB RX Yes No ⤷  Get Started Free ⤷  Get Started Free Y ⤷  Get Started Free
Novartis PROMACTA eltrombopag olamine TABLET;ORAL 022291-002 Nov 20, 2008 AB RX Yes No ⤷  Get Started Free ⤷  Get Started Free Y ⤷  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

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