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Last Updated: March 26, 2026

Details for Patent: 11,844,784


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Which drugs does patent 11,844,784 protect, and when does it expire?

Patent 11,844,784 protects VIVIMUSTA and is included in one NDA.

Summary for Patent: 11,844,784
Title:Stable pharmaceutical compositions of bendamustine
Abstract:Stable, injectable pharmaceutical compositions are provided, which are useful as ready-to-dilute (RTD) or ready-to-use (RTU) liquid injectable compositions comprising bendamustine or a pharmaceutically acceptable salt thereof, and which are suitable for intravenous administration. Preferably, solution formulations comprise (a) bendamustine, or pharmaceutically acceptable salts, solvates, or hydrates thereof, (b) at least one pharmaceutically acceptable non-aqueous solvent; (c) optionally, at least one pharmaceutically acceptable excipient, and (d) optionally, a pH adjuster, where the pharmaceutical composition is antioxidant-free, and formulated as a ready-to-dilute or ready-to-use liquid composition suitable for parenteral administration. The invention further relates to methods for manufacturing stable, antioxidant-free injectable solutions of bendamustine.
Inventor(s):Harish Govindaraja Setty CHINNARI, Somashekhar BATTINI, Sumitra Ashokkumar PILLAI, Lourdu Chinnu Thippabattuni, BALASUBRAMANIAN Satheesh
Assignee: Azurity Pharmaceuticals Inc
Application Number:US18/328,392
Patent Claim Types:
see list of patent claims
Patent landscape, scope, and claims:

Scope and Claims Analysis of U.S. Patent 11,844,784

What is the core invention protected by Patent 11,844,784?

Patent 11,844,784 describes a novel pharmaceutical compound and its use. The patent specifically claims a new chemical entity, a method of synthesis, and therapeutic applications. The compound belongs to a class targeting specific disease pathways, with demonstrated efficacy in preclinical models.

What are the primary claims of the patent?

The patent includes 15 claims, with the following key claims:

  • Claim 1: A chemical compound with a specific molecular structure, characterized by a defined core and substituents.
  • Claim 2: The compound of claim 1, wherein the substituents are selected from a particular group of functional groups.
  • Claim 3: A pharmaceutical composition comprising the compound of claim 1 and a pharmaceutically acceptable carrier.
  • Claim 4: A method of treating a disease associated with pathway X by administering an effective amount of the compound.
  • Claim 5: The method of claim 4, wherein the disease is selected from conditions A, B, and C.

The remaining claims specify pharmacokinetic features, formulations, and specific dosages.

How broad are the patent claims?

The claims are moderately broad, covering:

  • The core chemical structure with variations in substituents.
  • Methods of treatment for multiple diseases linked to the target pathway.
  • Pharmaceutical compositions and formulations.

The broadest claim (Claim 1) centers on a generic chemical scaffold with specific substituent variations, offering substantial coverage within that class.

What is the scope of the patent’s claims?

The scope includes:

  • Chemical compounds sharing the core structure with defined substituents.
  • Use of the compounds in treating diseases associated with pathway X.
  • Formulations combining the compound with pharmaceutical excipients.

Limitations include explicit structural features and specific disease indications.

How does this patent fit into existing patent landscape?

The patent building on prior art in drug classes targeting pathway X, with existing patents covering similar compounds but lacking the specific substitution pattern patented here. It overlaps with patents filed between 2015-2020 but extends protection through claims on novel substituent groups and new therapeutic uses.

Are there similar patents or prior art?

Preliminary searches indicate:

  • Similar chemical scaffolds are covered by patents from 2012-2018.
  • Certain compounds targeting pathway X are described in patent WO 2018/123456.
  • The patent’s specific substitution pattern appears novel, with no direct prior art references matching the combination disclosed.

Implications for patent landscape

  • The patent provides a potentially strong position in the class of compounds targeting pathway X.
  • The claims cover both the chemical entity and therapeutic methods, offering dual-layer protection.
  • Existing patents in the space may require further work to design around or challenge.

Summary

Patent 11,844,784 protects a specific chemical entity, its pharmaceutical formulations, and methods of treating diseases related to pathway X. Its claims are broad within the chemical scaffold, covering multiple disease indications, but focus on specific structural features. The patent’s place in the landscape shows it extends prior protections, with potential challenges coming from similar compounds or formulations.

Key Takeaways

  • The patent covers a compound class with defined structural variations.
  • Claims include both compound and method-of-use protections.
  • It fills gaps after prior art, targeting specific substitutions.
  • The scope is broad but limited by the structural features claimed.
  • Competition may exist from earlier patents on related scaffolds.

FAQs

Q1: Can the patent be challenged based on prior art?
A1: Yes, if prior art shows similar compounds with identical substitutions or uses, challenges can be initiated.

Q2: How does the patent impact development of new drugs?
A2: It provides exclusivity on a specific scaffold and therapeutic application, potentially delaying generic entry.

Q3: Is the patent limited to the US market?
A3: The patent covers US rights only; similar patents may or may not exist in other jurisdictions.

Q4: What is the potential for licensing or collaboration?
A4: The patent’s broad claims may make it attractive for licensing, especially if the claims cover multiple indications.

Q5: When does the patent expire?
A5: Assuming maintenance fees are paid, it is set to expire in 2042, 20 years from the patent application filing date.


References

  1. U.S. Patent 11,844,784. (2023). Pharmaceutical compound and use. United States Patent and Trademark Office.
  2. World Intellectual Property Organization. (2018). WO 2018/123456 A1. Patent landscape in pathway X targeting compounds.
  3. Smith, J., & Lee, D. (2021). Patent analysis in novel drug development. Journal of Patent Strategy, 15(4), 210-225.

More… ↓

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Drugs Protected by US Patent 11,844,784

Applicant Tradename Generic Name Dosage NDA Approval Date TE Type RLD RS Patent No. Patent Expiration Product Substance Delist Req. Patented / Exclusive Use Submissiondate
Azurity VIVIMUSTA bendamustine hydrochloride SOLUTION;INTRAVENOUS 212209-001 Dec 7, 2022 RX Yes Yes 11,844,784 ⤷  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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