IP Verse

Ceftolozane Antibiotic Compositions

Patent No. EP2893929 (titled "Ceftolozane Antibiotic Compositions") was filed by Calixa Therapeutics on Mar 14, 2014. The application was issued on Apr 16, 2025.

Patent Summary

Pharmaceutical compositions comprising ceftolozane and sodium chloride, wherein the sodium chloride is present in an amount sufficient to stabilize the ceftolozane. The compositions have fewer additional compounds and are more chemically stable, and can therefore be stored for longer periods of time.

Patent Family

Patent Family

Patent Oppositions

Patent oppositions filed by competitors challenge the validity of a granted patent. These oppositions are typically based on claims of prior art, lack of novelty, or non-obviousness. They are a key part of the process for determining a patent's strength and enforceability.

CompanyOpposition DateRepresentative
COPA COPENHAGEN PATENTS KSJan 14, 2026COPA COPENHAGEN PATENTS

Dossier Documents

The dossier documents provide a comprehensive record of the patent's prosecution history - including filings, correspondence, and decisions made by patent offices - and are crucial for understanding the patent's legal journey and any challenges it may have faced during examination.

  • Date

    Description

  • Get instant alerts for new documents

EP2893929

CALIXA THERAPEUTICS
Application Number
EP14199792A
Filing Date
Mar 14, 2014
Status
Granted And Under Opposition
Mar 14, 2025
Publication Date
Apr 16, 2025
External Links
Slate, Register , Google Patents