IP Verse

Pharmaceutical Composition Comprising Drospirenone And Contraceptive Kit

Patent No. EP3632448 (titled "Pharmaceutical Composition Comprising Drospirenone And Contraceptive Kit") was filed by Laboratorios Leon Farma on Jun 28, 2011. The application was issued on Jan 12, 2022.

Patent Summary

Contraceptive composition containing drospirenone for improved oral bioavailability and reduced side effects compared to existing drospirenone-containing contraceptives like Yasminelle. The composition has specific particle size and dissolution properties to delay the peak blood levels and prolong the time to peak compared to Yasminelle. This reduces the peak drospirenone concentration and potential side effects like hyperkalemia. The composition can be a single-ingredient drospirenone contraceptive without ethinylestradiol. It aims to provide an alternative to current drospirenone-containing contraceptives with improved safety and convenience by reducing the peak hormone levels and eliminating the need for daily ethinylestradiol.

Patent Family

Patent Family

Patent Oppositions (2)

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
ADALVOOct 12, 2022MAIWALD
LUIGIOct 12, 2022TER MEER STEINMEISTER & PARTNER

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

EP3632448

LABORATORIOS LEON FARMA
Application Number
EP19209672A
Filing Date
Jun 28, 2011
Status
Granted And Under Opposition
Dec 10, 2021
Publication Date
Jan 12, 2022
External Links
Slate, Register , Google Patents