The weekly litigation news digest is live. Subscribe now

IP Verse

Improved Filter Paper For Cigarette Filters - EP3433427

The patent EP3433427 was granted to Delfortgroup on Jun 25, 2025. The application was filed on Jan 24, 2017 under application number EP17701315A. The patent is currently recorded with a legal status of "Patent Maintained As Amended".

EP3433427

DELFORTGROUP
Application Number
EP17701315A
Filing Date
Jan 24, 2017
Status
Patent Maintained As Amended
May 23, 2025
Publication Date
Jun 25, 2025
External Links
Slate, Register, Google Patents

Patent Summary

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 DateRepresentativeOpposition Status
MIQUEL Y COSTAS & MIQUELJun 9, 2021CUETO -
SCHWEITZER MAUDUITJun 8, 2021WALLADMISSIBLE

Patent Citations (19) New

Patent citations refer to prior patents cited during different phases such as opposition or international search.

Citation PhasePublication Number
DESCRIPTIONEP2761085
INTERNATIONAL-SEARCH-REPORTEP1098036
INTERNATIONAL-SEARCH-REPORTEP2761085
OPPOSITIONEP0758532
OPPOSITIONGB2075328
OPPOSITIONJP2003119613
OPPOSITIONUS2012067359
OPPOSITIONUS2013014774
OPPOSITIONUS2014137880
OPPOSITIONUS2015173414
OPPOSITIONUS2015374030
OPPOSITIONUS4809717
OPPOSITIONUS5394895
OPPOSITIONUS5692527
OPPOSITIONUS6103294
OPPOSITIONWO2009031246
OPPOSITIONWO2014207704
OPPOSITIONWO2015035137
OPPOSITIONWO2015178995

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