IP Verse

Oil/Grease Resistant Paper Products - EP4244422

The patent EP4244422 was granted to Sappi North America on Dec 4, 2024. The application was originally filed on Aug 11, 2021 under application number EP21763477A. The patent is currently recorded with a legal status of "Granted And Under Opposition".

EP4244422

SAPPI NORTH AMERICA
Application Number
EP21763477A
Filing Date
Aug 11, 2021
Status
Granted And Under Opposition
Nov 1, 2024
Grant Date
Dec 4, 2024
External Links
Slate, Register, Google Patents

Patent Summary

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Patent Family

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 DateRepresentativeOpposition Status

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KOEHLER INNOVATION & TECHNOLOGYSep 3, 2025MEISSNER BOLTE PARTNERSCHAFT MBBADMISSIBLE
UPM SPECIALTY PAPERSSep 3, 2025BERGGRENADMISSIBLE
BILLERUD AKTIEBOLAG PUBLAug 21, 2025KRANSELL & WENNBORG KBADMISSIBLE

Patent Citations (14) New

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

Citation PhasePublication NumberPublication Link
EXAMINATIONEP3186442
INTERNATIONAL-SEARCH-REPORTEP2402167
INTERNATIONAL-SEARCH-REPORTEP3186442
INTERNATIONAL-SEARCH-REPORTWO2018200790
OPPOSITIONEP3561178
OPPOSITIONJP2012241304
OPPOSITIONJP2014141750
OPPOSITIONUS2018245291
OPPOSITIONWO2005044469
OPPOSITIONWO2012000609
OPPOSITIONWO2017001857
OPPOSITIONWO2018031387
OPPOSITIONWO2018116118
OPPOSITIONWO2020121162

Non-Patent Literature (NPL) Citations (11) 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
OPPOSITION- Akamanuwatr S., Wanakhachornkrai P., "New generation coating additives as total binder reduction in coating formula and renewable coating binders", IPPTA - The Official International Journal, (20160301), vol. 28, no. 1, pages 19 - 25, XP093308297-
OPPOSITION- Anonnmous, "FINNTALC M15", A global specialty chemicals company, A global specialty chemicals company, (20210224), XP055779176-
OPPOSITION- "Chapter 16 Process control and automation in coating machine", Jouni Pattakari, Pigment Coating and Surface Sizing of Paper, 2nd Edition, Paper Engineers' Association/Paperi ja Puu Oy, (2009), pages 588 - 596, ISBN 978-952-5216-27-1-
OPPOSITION- Najafi Seyyed Mohammad Hashemi, "Influence of Mechanical Properties of Paper Coating on the Crack at the Fold Problem ", Doctoral Dissertation, The University of Maine, (20190501), pages 1 - 21, XP093313182-
OPPOSITION- Paltakari Jouni , "Chap.1 pg16-17; Chap.6 pg96; Chap.13 pg190, 193 ; Chap.29 pg595", Pigment Coating and Surface Sizing of Paper, Paperi ja Puu Oy, (20000101), pages 1 - 602, XP093308315-
OPPOSITION- Sami-Seppo Ovaska, "Oil and grease barrier properties of converted dispersion-coated paperboards", Thesis, (20160101), pages 1 - 101, XP093153618-
OPPOSITION- Siiskonen Olli, "Towards 100% natural binder concepts for paper and board", World Pulp & Paper - The International review for the pulp and paper industry, (20140101), pages 66 - 68, XP093211503-
OPPOSITION- P. Tanninen, Et Al., "Thermal and mechanical durability of starch-based dual polymer coatings in the press forming of paperboard", Packaging Technology and Science, John Wiley & Sons Ltd, UK, UK , (20140501), vol. 27, no. 5, doi:10.1002/pts.2036, ISSN 0894-3214, pages 353 - 363, XP055595548
OPPOSITION- Caisa Andersson, "New ways to enhance the functionality of paperboard by surface treatment - a review", Packaging Technology and Science, GB, (20081001), vol. 21, no. 6, doi:10.1002/pts.823, ISSN 0894-3214, pages 339 - 373, XP055370601
OPPOSITION- Wang Jinhai, Xu Hong, Battocchi Dante, Bierwagen Gordon, "The determination of critical pigment volume concentration (CPVC) in organic coatings with fluorescence microscopy", Process in organic coatings, ELSEVIER BV, NL, NL , (20141201), vol. 77, no. 12, doi:10.1016/j.porgcoat.2013.12.010, ISSN 0300-9440, pages 2147 - 2154, XP093313186
OPPOSITION- Roger Bollström, Roger Nyqvist, Janet Preston, Pekka Salminen, Martti Toivakka, "Barrier properties created by dispersion coating", Tappi Journal, (20130401), vol. 12, no. 4, doi:10.32964/TJ12.4.45, pages 45 - 51, XP055683276

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Dossier Documents

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