Pressurised Dispensing Container
Patent No. EP4100337 (titled "Pressurised Dispensing Container") was filed by Bespak Europe on Jan 26, 2021. The application was issued on Jul 9, 2025.
Patent Summary
A pressurized dispensing container, such as a pharmaceutical metered dose aerosol inhaler, comprises a container holding a propellant of 1,1-difluoroethane and optionally ethanol, and a valve fixed via a sealing gasket. The valve includes a valve body, a slidable valve stem, and one or more seals regulating fluid discharge. The sealing gasket is formed from an elastomeric composition comprising an isobutylene polymer or co-polymer. The one or more seals are formed from an elastomeric composition comprising an ethylene-propylene-diene terpolymer consisting of 40–70 wt.% ethylene, 30–50 wt.% propylene, and 0.5–9 wt.% ethylidenenorbornene (ENB), with a Mooney Viscosity (ML 1 + 4, 125°C) between 10 and 90.
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.
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
EP4100337
- Application Number
- EP21702703A
- Filing Date
- Jan 26, 2021
- Status
- Granted And Under Opposition
- Jun 6, 2025
- Publication Date
- Jul 9, 2025
- External Links
- Slate, Register , Google Patents