IP Verse

Process For The Preparation Of Novolac Alkylphenol Resins - EP3426502

The patent EP3426502 was granted to Sumitomo Bakelite Europe on Dec 11, 2019. The application was originally filed on Mar 9, 2017 under application number EP17712026A. The patent is currently recorded with a legal status of "Revoked".

EP3426502

SUMITOMO BAKELITE EUROPE
Application Number
EP17712026A
Filing Date
Mar 9, 2017
Status
Revoked
Jul 15, 2025
Grant Date
Dec 11, 2019
External Links
Slate, Register, Google Patents

Patent Summary

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 DateRepresentativeOpposition Status

Get instant alerts for new oppositions and patent status changes

SI GROUPSep 10, 2020DEHNSADMISSIBLE

Patent Citations (13) New

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

Citation PhasePublication NumberPublication Link
DESCRIPTIONEP0501227
DESCRIPTIONEP1108734
DESCRIPTIONJPH11349655
DESCRIPTIONUS4167540
DESCRIPTIONUS6326453
DESCRIPTIONUS7488784
INTERNATIONAL-SEARCH-REPORTCN104693679
INTERNATIONAL-SEARCH-REPORTUS3108087
OPPOSITIONCN104031220
OPPOSITIONUS2008280787
OPPOSITIONUS2015112024
OPPOSITIONUS3294866
OPPOSITIONUS9133294

Non-Patent Literature (NPL) Citations (7) New

NPL citations refer to non-patent references such as research papers, articles, or other publications cited during examination or opposition phases.

Citation PhaseReference TextLink
DESCRIPTION- BORRAJO ET AL., POLYMER, (1982), vol. 23, pages 263 - 266-
DESCRIPTION- LI ZIQIANG, MINING AND METALLURGY, (1996), vol. 5, pages 24 - 27-
INTERNATIONAL-SEARCH-REPORT- Prakash Mahanwar, "PHENOLIC RESINS", Matunga, Mumbai-400 019, (20140118), pages 1 - 50, URL: http://www.ipiindia.org/materials?task=callelement&format=raw&item_id=939&element=cf0577f3-519f-4fe3-9d25-658179076aff&method=download, (20161110), XP055318080 [A] 1-27 * pages 7,9-11,4 * * the whole document *-
OPPOSITION- anonymous, "Frequently Asked Questions About Substances of Very High Concern For Manufacturers and Downstream Users", The Alkylphenols & Ethoxylates Research Council (APERC), (20130501), pages 1 - 6, XP055765970-
OPPOSITION- CAS, (20200817), Database accession no. 140-66-9, XP055765965-
OPPOSITION- "Chapter 7 Novolak Production", Louis Pilato, Phenolic Resins: A Century of Progress, Springer, (20100000), pages 147 - 151, ISBN 978-3-642-04713-8, XP055765967-
OPPOSITION- Kowatsch Stefan, "Formaldehyde", Phenolic Resins: A Century of Progress, (20100227), pages 25 - 40, XP055804340-

Download Citation Report

Get a free citation report including examiner, opposition, and international search citations.

Get Citation Report

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