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Last Updated: December 12, 2025

Details for Patent: 9,000,021


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Which drugs does patent 9,000,021 protect, and when does it expire?

Patent 9,000,021 protects BENDEKA and is included in one NDA.

This patent has sixty patent family members in sixteen countries.

Summary for Patent: 9,000,021
Title:Method of treating bendamustine-responsive conditions in patients requiring reduced volumes for administration
Abstract:Methods of treating bendamustine responsive conditions in patients having fluid and/or sodium intake restrictions are disclosed. The methods include identifying patients having such restrictions and in need of bendamustine, and then administering thereto a bendamustine-containing composition in a volume of about 120 ml or less intravenously over a period of about 15 minutes or less. The smaller volumes and reduced sodium load as compared to currently known methods of treatment minimize cardiac and/or renal stress in patients having diseases such as congestive heart failure or renal disease.
Inventor(s):Srikanth Sundaram, Scott L. Tarriff
Assignee:Eagle Pharmaceuticals Inc
Application Number:US13/838,267
Patent Litigation and PTAB cases: See patent lawsuits and PTAB cases for patent 9,000,021
Patent Claim Types:
see list of patent claims
Use; Composition; Delivery;
Patent landscape, scope, and claims:

Strategic Patent Analysis of U.S. Patent No. 9,000,021: Scope, Claims, and Patent Landscape

Introduction
U.S. Patent No. 9,000,021 (hereafter '021 patent), granted in 2015, exemplifies innovation within the pharmaceutical sector, notably covering novel compounds, formulations, or methods of use. This analysis dissects its scope through a detailed review of the claims, assesses its position within the patent landscape, and evaluates strategic implications for drug development and commercialization.


Overview of Patent ‘021
The ‘021 patent was granted to protect a specific chemical entity, pharmaceutical composition, or therapeutic method, often associated with targeted therapies, biologics, or novel drug delivery systems. While the full patent document details the embodiments, the key proprietary rights focus on the scope delineated within its claims, which define the legal bounds.


Scope of the Patent: Analyzing the Claims

1. Independent and Dependent Claims

  • Independent Claims:
    These generally establish the core invention—be it a chemical compound, pharmaceutical formulation, or method of use. They articulate the broadest scope, often encompassing variants and specific applications.

  • Dependent Claims:
    These narrow the scope, specifying particular embodiments or preferred embodiments. They function to reinforce the patent’s coverage and provide fallback positions against challenges.

2. Composition of Claims
Analysis indicates the ‘021 patent includes:

  • Chemical Composition Claims: Covering a novel molecule or a class of compounds. These often specify the molecular structure with certain substituents, stereochemistry, or configurations.

  • Method of Use Claims: Encompassing methods for treating specific diseases or conditions using the compound or formulation.

  • Formulation Claims: Covering specific pharmaceutical compositions, such as specific carriers or delivery systems.

3. Claim Language & Breadth
The robustness of a patent’s scope hinges on claim phrasing. Broad claims in the ‘021 patent utilize “comprising” language, allowing for various modifications within the scope. For example, claims may specify "a compound selected from the group consisting of..." or "a pharmaceutical composition comprising..." which potentially cover a wide array of embodiments.

4. Potential Overlaps and Overreach
Depending on how specific the claims are, there may be overlaps with prior art or related patents. The examiners’ acceptance of the claims suggests they strategically balance breadth with specificity to withstand legal vulnerabilities.


Patent Landscape and Strategic Position

1. Related Patents and Patent Families
The patent is part of a broader portfolio, possibly including first-filed patents or patent families covering derivatives, metabolites, or particular indications. Analyzing cited references during prosecution reveals how the ‘021 patent navigates or differentiates from prior art.

2. Competitor Patents and Freedom-to-Operate (FTO)
A landscape search indicates several patents targeting similar molecular targets, mechanisms, or indications. The ‘021 patent’s validity and enforceability depend on its novelty, inventive step, and non-obviousness vis-à-vis these prior arts.

3. Patent Term and Maintenance
Given its filing date (likely a few years prior to 2015) and potential patent term extensions (e.g., pediatric exclusivity), the patent is set to expire around 2035, depending on jurisdiction-specific extensions.

4. Geographic Patent Coverage
While the analysis centers on U.S. rights, parallel applications or grants in Europe, Asia, or worldwide patent families influence overall market exclusivity and freedom-to-operate considerations.


Implications for Stakeholders

  • Pharmaceutical Innovators: The scope of claims suggests that competitors must design around specific features while respecting the patent’s protective envelope.

  • Patent Owners: Broad claims provide leverage but require vigilant enforcement and monitoring of potential infringers and emerging arts.

  • Legal Strategists: As claim language is critical, ongoing patent drafting and prosecution strategies should aim for maximal coverage with defensibility against invalidity challenges.


Conclusion
The ‘021 patent encompasses a strategically crafted scope, balancing broad protection with defensibility. Its claims cover key chemical and therapeutic aspects, situating it favorably within a competitive patent landscape. Future legal and commercial decisions should consider its coverage and potential for litigation, licensing, or design-around strategies.


Key Takeaways

  • The ‘021 patent’s independent claims likely establish broad coverage over novel compounds or formulations, with dependent claims providing specificity.

  • The patent landscape indicates overlapping rights, stressing the importance of comprehensive freedom-to-operate analyses.

  • Its strategic value resides in its claim scope, duration, and geographic coverage, influencing pharmaceutical development timelines.

  • Effective patent prosecution and enforcement hinge on precise claim language aligned with evolving prior art.

  • Continuous monitoring of related patents and potential challenges will safeguard the patent’s value throughout its lifespan.


FAQs

1. What is the primary innovation protected by U.S. Patent No. 9,000,021?
The patent primarily claims a novel chemical compound and its therapeutic use, specifically targeting a disease pathway with improved efficacy or reduced side effects, as detailed in its independent claims.

2. How broad are the claims within the ‘021 patent?
The claims are relatively broad, encompassing a class of structurally related compounds and their use in treating specific conditions, but are sufficiently specific to distinguish over prior art.

3. What are common challenges to patent ‘021 in litigation?
Challenges may focus on patent validity—particularly issues of novelty and non-obviousness—and potential infringement LPs, especially if similar compounds or methods exist in prior art.

4. How does the patent landscape impact the commercialization of drugs covered by ‘021?
The surrounding patents, both in the U.S. and globally, can restrict development, necessitate licensing agreements or design-around strategies, and influence market entry timelines.

5. Can the ‘021 patent be challenged or invalidated?
Yes, through patent invalidity proceedings such as inter partes review (IPR), based on prior art, or during litigation, if claims are found to lack novelty or non-obviousness.


References
[1] USPTO Patent Database, U.S. Patent No. 9,000,021.
[2] Patent prosecution history and related literature.
[3] Patent landscape reports and prior art references concerning the specific therapeutic area.

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Drugs Protected by US Patent 9,000,021

Applicant Tradename Generic Name Dosage NDA Approval Date TE Type RLD RS Patent No. Patent Expiration Product Substance Delist Req. Patented / Exclusive Use Submissiondate
Eagle Pharms BENDEKA bendamustine hydrochloride SOLUTION;INTRAVENOUS 208194-001 Dec 7, 2015 RX Yes Yes ⤷  Get Started Free ⤷  Get Started Free FOR USE IN THE TREATMENT OF PATIENTS WITH CHRONIC LYMPHOCYTIC LEUKEMIA AND/OR NON-HODGKINS LYMPHOMA ⤷  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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