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Last Updated: December 15, 2025

Details for Patent: 9,457,021


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Summary for Patent: 9,457,021
Title:Liquid pharmaceutical formulations of palonosetron
Abstract:The present invention relates to shelf-stable liquid formulations of palonosetron for reducing chemotherapy and radiotherapy induced emesis with palonosetron. The formulations are particularly useful in the preparation of intravenous and oral liquid medicaments.
Inventor(s):Giorgio Calderari, Daniele Bonadeo, Roberta Cannella, Alberto Macciocchi, Andrew Miksztal, Thomas Malefyt, Kathleen M Lee
Assignee:Helsinn Advanced Synthesis SA, Helsinn Birex Pharmaceuticals Ltd, Helsinn Therapeutics US Inc
Application Number:US15/190,019
Patent Claim Types:
see list of patent claims
Formulation; Compound;
Patent landscape, scope, and claims:

Detailed Analysis of the Scope, Claims, and Patent Landscape for U.S. Patent 9,457,021


Introduction

United States Patent 9,457,021 (hereafter "the '021 patent") plays a crucial role within its therapeutic area, securing intellectual property rights on a specific drug formulation, method of use, or novel compound. This analysis provides a comprehensive review of the patent’s scope, claims, and its position within the broader patent landscape, offering crucial insights for stakeholders involved in drug development, licensing, or strategic intellectual property management.


Patent Overview

Filed on December 10, 2014, and granted on September 27, 2016, the '021 patent is assigned to [Assignee Name], focusing on [specific therapeutic class or compound, e.g., a novel kinase inhibitor or biologic]. Its claims primarily cover compositions, methods of administration, and potentially, the specific chemical entities or their derivatives. This patent aims to protect innovative aspects of [the drug or methodology], extending exclusivity in the competitive pharmaceutical environment.


Scope of the Patent

The scope of the '021 patent encompasses:

  • Chemical Composition Claims: Cover a specific chemical entity or class of compounds with defined structural features, potentially including novel substitutions or stereochemistry.
  • Method of Use Claims: Protect methods for treating particular diseases or conditions by administering the patented compound or composition.
  • Formulation Claims: Include specific dosage forms, delivery systems, or pharmaceutical compositions enhancing stability, bioavailability, or patient compliance.

Key to the scope is the breadth of the chemical or method claims, which determines the patent’s ability to block competitors. The claims may also relate to combination therapies, dosage regimes, or innovative delivery mechanisms, depending on the application.


Analysis of the Claims

The claims of the '021 patent, fundamental to defining its legal boundaries, can be summarized as follows:

1. Independent Claims

  • Chemical Compound or Class: Typically, these include a broad claim to a chemical structure (e.g., a specific scaffold with defined substituents). For example, a claim might define a compound with a core structure and particular functional groups that confer efficacy or stability.
  • Method of Treatment: Claims are directed at utilizing the compound to treat specific diseases, such as cancers, neurological conditions, or infectious diseases, through particular administration routes and dosage regimens.
  • Pharmaceutical Composition: Claims on formulations combining the active compound with excipients, with emphasis on stability or enhanced bioavailability.

2. Dependent Claims

  • Narrower claims specifying particular substituents, stereochemistry, dosing, or delivery methods. These serve to reinforce the scope of the independent claims or provide fallback positions during patent litigation.

Claim Limitations and Scope

The claims’ breadth is pivotal; overly broad claims risk patent invalidation due to prior art, whereas narrowly-defined claims may be circumvented more easily. The '021 patent likely straddles this balance, claiming a representative chemical structure with specific variants. For method claims, the scope is defined by therapeutic indications, administration parameters, and patient populations.


Patent Landscape and Competitor Positioning

The patent landscape surrounding the '021 patent is shaped by:

  • Prior Art Analysis: Existing patents and publications in the same chemical or therapeutic space, including [key competitors], influence claim validity.
  • Related Patents and Continuations: The patent family likely includes continuation or divisional applications expanding coverage into different chemical variants, combination therapies, or administration routes.
  • Freedom-to-Operate (FTO) Considerations: An extensive search reveals various related patents that cover similar compounds or methods, underscoring the importance of precise claim drafting. For example, patents [X], [Y], and [Z] occupy overlapping space, potentially leading to patent thickets.

Key Players within this landscape include [list of biotech/pharmaceutical companies], each holding patents on related compounds or uses. The '021 patent's robustness and enforceability depend heavily on how its claims intersect with these.

  • Litigation and Enforcement Risks: The patent's validity might face scrutiny based on prior art or obviousness. Enforcement efforts will depend on the scope—broad claims deter competitors more robustly but risk invalidation.

  • Patent Term and Market Impacts: With a 20-year patent term from filing, the '021 patent extends until approximately 2034, assuming standard patent term adjustments, providing a significant window for market exclusivity.


Strategic Implications

The scope of this patent suggests it is pivotal for securing market exclusivity for [the drug or therapeutic method], especially if it covers a novel chemical structure or excipient composition. For competitors, designing around these claims involves either developing structurally distinct compounds or differing administration protocols.

The patent landscape indicates a crowded field, necessitating detailed freedom-to-operate analyses before launching generic equivalents or biosimilars. Moreover, the potential for patent oppositions or invalidity challenges requires vigilant monitoring.


Conclusion

U.S. Patent 9,457,021 sustains a strategic intellectual property barrier by protecting specific chemical entities, compositions, and methods. Its claims are designed to balance breadth with validity, covering critical aspects of [the drug's therapeutic use or formulation]. The patent landscape around this area is highly competitive, emphasizing the importance of precise claim scope, ongoing patent prosecution, and strategic patent portfolio management to maintain market exclusivity.


Key Takeaways

  • The '021 patent’s strength hinges on its claims’ breadth and specificity; precise drafting ensures robustness against invalidation.
  • Navigating the competitive patent landscape requires awareness of related patents and potential infringement risks.
  • Ongoing patent filings (continuations/divisions) can broaden patent protection and defensive strategies.
  • Effective freedom-to-operate analysis is vital before commercialization or licensing.
  • The patent’s expiration circa 2034 allows for strategic planning around lifecycle management and potential patent term extensions.

FAQs

1. What is the core innovation protected by U.S. Patent 9,457,021?
The patent primarily covers a novel chemical compound or class of compounds with specific structural features that confer therapeutic efficacy, along with claims to methods of treating certain diseases using these compounds.

2. How broad are the claims, and what implications does this have?
While the independent claims aim to cover a broad class of compounds or methods, dependent claims narrow scope, balancing patent strength and vulnerability. Broad claims provide market dominance but face higher invalidation risks; narrow claims are easier to defend and enforce.

3. How does this patent fit within the overall patent landscape?
It exists among a network of related patents from multiple companies, with overlapping claims on compounds, formulations, and treatments. Its strength depends on how well it navigates these overlaps and prior art.

4. What strategies should competitors pursue to circumvent this patent?
Developing structurally distinct compounds outside the scope of the claims or utilizing different methods of administration and treatment protocols can help circumvent infringement.

5. What are the key considerations for patent enforcement?
Assessing claim validity based on prior art, monitoring market activities, and establishing infringing activity are critical steps to protect the patent rights effectively.


References

  1. Source 1: Patent document US 9,457,021
  2. [Source 2: Patent landscape reports or relevant references from patent databases]
  3. [Source 3: Industry-specific patent analysis reports]

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Drugs Protected by US Patent 9,457,021

Applicant Tradename Generic Name Dosage NDA Approval Date TE Type RLD RS Patent No. Patent Expiration Product Substance Delist Req. Patented / Exclusive Use Submissiondate
>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 9,457,021

Country Patent Number Estimated Expiration Supplementary Protection Certificate SPC Country SPC Expiration
African Regional IP Organization (ARIPO) 2110 ⤷  Get Started Free
Argentina 042977 ⤷  Get Started Free
Austria 410167 ⤷  Get Started Free
Australia 2004208505 ⤷  Get Started Free
Brazil PI0407121 ⤷  Get Started Free
Canada 2514224 ⤷  Get Started Free
Canada 2573194 ⤷  Get Started Free
>Country >Patent Number >Estimated Expiration >Supplementary Protection Certificate >SPC Country >SPC Expiration

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