IP Verse

Tablets Comprising Tamsulosin And Solifenacin

Patent No. EP3697392 (titled "Tablets Comprising Tamsulosin And Solifenacin") was filed by Synthon on Oct 17, 2018. The application was issued on Nov 15, 2023.

Patent Summary

A multi-layer tablet comprises a controlled release part containing tamsulosin.HCl and an immediate release part produced via wet granulation. The immediate release part consists of solifenacin succinate and a water-insoluble diluent (a combination of dicalcium phosphate and microcrystalline cellulose) at 80–95% w/w. Additional components of the immediate release part include a silicon dioxide glidant with a specific surface area ≤400 m²/g (0.05–10% w/w), a disintegrant (1–10% w/w), and a lubricant (0.25–5% w/w). The composition avoids reducing sugars and peroxides to prevent Maillard reactions and stability issues. The tablet may be a bilayer configuration, typically containing 0.4–1.6 mg tamsulosin and 1–30 mg solifenacin, utilizing the water-insoluble diluent to enhance stability and rapid disintegration.

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Patent Oppositions (3)

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
KRAUS & WEISERTAug 13, 2024KRAUS & LEDERER PARTGMBB
ADAMED PHARMAAug 9, 2024VOSSIUS & PARTNER PATENTANWALTE RECHTSANWALTE MBB
ADALVOJan 23, 2024VOSSIUS & PARTNER PATENTANWALTE RECHTSANWALTE MBB

Dossier Documents

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  • Date

    Description

EP3697392

SYNTHON
Application Number
EP18785395A
Filing Date
Oct 17, 2018
Status
Granted And Under Opposition
Oct 13, 2023
Publication Date
Nov 15, 2023
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