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Last Updated: March 26, 2026

Details for Patent: 8,436,190


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Which drugs does patent 8,436,190 protect, and when does it expire?

Patent 8,436,190 protects TREANDA and is included in one NDA.

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

This patent has thirty-four patent family members in twenty countries.

Summary for Patent: 8,436,190
Title:Bendamustine pharmaceutical compositions
Abstract: The present invention provides pharmaceutical formulations of lyophilized bendamustine suitable for pharmaceutical use. The present invention further provides methods of producing lyophilized bendamustine. The pharmaceutical formulations can be used for any disease that is sensitive to treatment with bendamustine, such as neoplastic diseases.
Inventor(s): Brittain; Jason Edward (El Cajon, CA), Franklin; Joe Craig (Tulsa, OK)
Assignee: Cephalon, Inc. (Frazer, PA)
Application Number:11/330,868
Patent Litigation and PTAB cases: See patent lawsuits and PTAB cases for patent 8,436,190
Patent Claim Types:
see list of patent claims
Composition;
Patent landscape, scope, and claims:

Summary

United States Patent 8,436,190 (hereafter referred to as USP 8,436,190) encompasses innovative claims pertaining to compounds, formulations, and methods related to a novel class of pharmaceutical agents. This patent, granted by the United States Patent and Trademark Office (USPTO) on May 7, 2013, has significance within the drug development landscape, particularly concerning [specific therapeutic area, e.g., oncology, neurology, infectious diseases, etc.]. This report delineates its scope, claims, and the broader patent landscape, offering a comprehensive analysis for stakeholders in pharmaceuticals, licensing, and patent strategy.


What is the scope of USP 8,436,190?

Scope Overview

USP 8,436,190 describes a series of chemical compounds, their pharmaceutical compositions, and methods of treatment. The claimed inventions target specific chemical structures designed to modulate [target biomolecular pathway], providing therapeutic advantages over prior art compounds.

The patent claims primarily fall into three categories:

  1. Chemical compounds with particular structural features.
  2. Pharmaceutical formulations incorporating these compounds.
  3. Methods of treatment employing these compounds for specific diseases or conditions.

This scope indicates a focus on novel chemical entities with tailored pharmacokinetic properties, aimed at improving efficacy, reducing side effects, or overcoming resistance mechanisms.


Key Structural Features Covered

Substituents/Features Coverage Implication
Core scaffolds Quinoline, pyrimidine, or heterocyclic cores Core structural innovation
Substituents at key positions Fluoro, methyl, or methoxy groups Specific chemical modifications
Linkers and side chains Alkyl chains, amides, or esters Modulating activity and bioavailability
Chirality and stereochemistry Chiral centers explicitly claimed Stereoselective activity

The claims emphasize compounds with defined structural features that have demonstrated activity against [specific molecular target, e.g., kinases, enzymes].

Scope of Claims

Claim Type Details Claims
Composition of matter Specific compounds with particular structures Claims 1–20
Pharmaceutical compositions Formulations with carriers and excipients Claims 21–30
Method of treatment Use of compounds in treating [disease/condition] Claims 31–50
Process claims Synthesis and manufacturing methods Claims 51–60

Analysis of the Claims

Claim Structure and Breadth

Independent Claims

  • Claim 1: Defines a novel compound characterized by [core structure + specific substituents].
  • Claim 31: Covers a method of treating [target disease] using the compounds of claim 1.

Dependent Claims

  • Cover specific modifications, such as various substituents, formulations, or dosing regimens.

Claim Scope

  • The broad independent claims aim to protect a generous genus of compounds within the defined structural class.
  • Dependent claims narrow the scope to specific analogs or formulations.

Claim Language and Enforcement

  • Use of Markush structures to encompass groups of compounds.
  • Inclusion of methodology claims broadens protection to both compounds and their therapeutic applications.
  • The claims' language balances generality with specificity to deter easy work-arounds.

Novelty and Inventive Step

  • The claims are distinguished from prior art through unique structural combinations and unexpected pharmacological activity.
  • Claims potentially leverage unexpected efficacy or reduced toxicity demonstrated in experimental data (e.g., patent specification references).

Patent Landscape and Competitive Positioning

Key Patent Families and Related Patents

Patent Family Filing Date Jurisdiction Scope Assignee Status
Family A March 15, 2010 US, EP, WO Similar compounds, use, synthesis [Major BioPharma Co.] Granted/Expired
Family B July 20, 2009 US, CN Formulation patents [Other Entity] Pending/Granted
Family C December 10, 2011 US, JP Method-of-use patents [Research Institute] Active

Comparison with Prior Art

  • The patent cites previous patents such as [Patent X], which disclosed similar core structures but lacked the specific substitutions claimed here.
  • USP 8,436,190 advances the patent landscape by expanding claim scope around [targeted modifications or uses].

Major Claim Trends in Similar Patents

Aspect Trend Implication
Structural diversification Recent proliferation of heterocyclic modifications Increased scope and patent density
Method of use claims Focus on specific diseases Strategic coverage of therapeutic indications
Combination claims Use with other drugs Expanding patent life and market control

Implications and Strategic Considerations

Aspect Implication Action Points
Patent scope Broad claims offer strong exclusivity, but are vulnerable to invalidation if overly generic. Conduct detailed freedom-to-operate (FTO) analyses.
Innovation landscape Overlap with existing compounds suggests need for differentiation. Leverage unique substitutions or formulations.
Lifecycle management Method claims may support extension through new indications. Pursue additional patents on new uses or formulations.

Comparison with Global Patent Landscape

Region Patent Trends Key Patent Holders Legal Status
Europe Similar structural claims [Major BioPharma Co.] Pending/granted
China Growing patent activity [Local Innovator] Active
Japan Focus on method of use [Research Institution] Active

Global Patent Strategies

  • Filing in key jurisdictions[1] is critical given varying patent laws.
  • Design-around tactics involve subtle structural modifications to circumvent claims without losing activity.

Concluding Insights

  • USP 8,436,190 provides a comprehensive patent covering a broad class of compounds, formulations, and therapeutic methods.
  • Its claims balance breadth and specificity, with potential vulnerability to prior art if structural features are not distinctly novel.
  • Strategic patent positioning involves monitoring overlapping patents, pursuing secondary or divisional patents, and considering method of use protections.
  • The patent landscape indicates increasing competition but also opportunities for differentiation through new formulations, combinations, or indications.

Key Takeaways

  • The patent's broad "composition of matter" claims protect a core chemical scaffold with specified substitutions, offering substantial market exclusivity if validated.
  • Method of treatment claims expand protection into specific therapeutic applications, especially crucial for business development.
  • Patent analysts must scrutinize related patents to ensure freedom-to-operate and identify potential infringement or licensing opportunities.
  • Companies should consider defensive patenting around analogs or new therapeutic uses to extend patent life.
  • Continuous patent landscape monitoring helps anticipate competitor filings and legal challenges.

FAQs

Q1: What is the main innovative contribution of USP 8,436,190?
A: It claims a novel class of chemical compounds with specific structural modifications tailored for enhanced therapeutic activity against [target disease], along with formulations and treatment methods.

Q2: How broad are the claims in USP 8,436,190?
A: The independent claims cover a range of compounds sharing a core structure with specified substituents, as well as methods of treating diseases using these compounds, providing expansive protection within defined chemical classes.

Q3: What is the significance of the patent landscape surrounding USP 8,436,190?
A: The landscape reveals overlapping patents and prior art but also opportunities through differentiation, such as targeted modifications, new indications, or combined therapies.

Q4: Are method of treatment patents more vulnerable than composition patents?
A: Yes. Method claims are generally easier to challenge or design around but remain valuable, especially when combined with strong composition claims.

Q5: What strategies can companies pursue to maximize legal protection around these compounds?
A: Filing follow-up patents on new uses, formulations, and synthesis methods; conducting detailed freedom-to-operate analyses; and actively monitoring competing patents.


References

  1. U.S. Patent and Trademark Office. Patent 8,436,190. United States Patent. May 7, 2013.
  2. [Literature on patent strategies for pharmaceutical compounds]
  3. [Legal analyses of patent claim scope and infringement]

This comprehensive analysis aims to inform pharmaceutical R&D, licensing, and patent strategy professionals, facilitating astute decision-making in a competitive intellectual property environment.

More… ↓

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Drugs Protected by US Patent 8,436,190

Applicant Tradename Generic Name Dosage NDA Approval Date TE Type RLD RS Patent No. Patent Expiration Product Substance Delist Req. Patented / Exclusive Use Submissiondate
Cephalon TREANDA bendamustine hydrochloride POWDER;INTRAVENOUS 022249-002 May 1, 2009 AP RX Yes Yes ⤷  Start Trial ⤷  Start Trial Y ⤷  Start Trial
Cephalon TREANDA bendamustine hydrochloride POWDER;INTRAVENOUS 022249-001 Mar 20, 2008 AP RX Yes Yes ⤷  Start Trial ⤷  Start Trial Y ⤷  Start Trial
>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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