The patent EP4021975 was granted to Sabic on Apr 10, 2024. The application was originally filed on Aug 14, 2020 under application number EP20754766A. The patent is currently recorded with a legal status of "Granted And Under Opposition".

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.
Patent citations refer to prior patents cited during different phases such as opposition or international search.
| Citation Phase | Publication Number |
|---|---|
| DESCRIPTION | EP0019330 |
| DESCRIPTION | EP1273595 |
| DESCRIPTION | US4399054 |
| DESCRIPTION | US4472524 |
| DESCRIPTION | US4771024 |
| DESCRIPTION | US4866022 |
| DESCRIPTION | US5017714 |
| DESCRIPTION | US5093415 |
| DESCRIPTION | US5324820 |
| DESCRIPTION | US6825146 |
| DESCRIPTION | WO03068828 |
| DESCRIPTION | WO2006010414 |
| DESCRIPTION | WO2007134851 |
| DESCRIPTION | WO2014044682 |
| DESCRIPTION | WO2014161621 |
| DESCRIPTION | WO2015091983 |
| DESCRIPTION | WO9632426 |
| INTERNATIONAL-SEARCH-REPORT | EP1344793 |
| INTERNATIONAL-SEARCH-REPORT | EP2145923 |
| INTERNATIONAL-SEARCH-REPORT | EP2787034 |
| OPPOSITION | EP2141193 |
| OPPOSITION | WO2007009534 |
| OPPOSITION | WO2007071447 |
| OPPOSITION | WO2014161621 |
| OPPOSITION | WO2016066446 |
| OPPOSITION | WO2016095225 |
| OPPOSITION | WO2017060139 |
| OPPOSITION | WO2018114979 |
| OPPOSITION | WO2018138235 |
NPL citations refer to non-patent references such as research papers, articles, or other publications cited during examination or opposition phases.
| Citation Phase | Reference Text |
|---|---|
| OPPOSITION | - Anonymous, "Passage ; Plastics Additives Handbook", Anonymous, Hans Zweifel , Ralph D. Maier , Michael Schiller, Plastics additives handbook, DE , Hanser, (20090101), pages 109 - 113, ISBN 978-1-56990-430-5, XP093295452 |
| OPPOSITION | - Anonymous, "Passage ; Plastics Additives Handbook", Anonymous, Hans Zweifel , Ralph D. Maier , Michael Schiller, Plastics additives handbook, DE , Hanser, (20090101), pages 925 - 925, ISBN 978-1-56990-430-5, XP093295454 |
| OPPOSITION | - Anonymous, "Plastics - Determination of the melt mass-flow rate (MFR) and melt volume- flow rate (MVR) of thermoplastics - Part 1: Standard method (ISO 1133-1). second edition", International Standard, (20220601), pages 1 - 34, XP055980232 |
| OPPOSITION | - Anonymous, "Plastics - Determination ofxylenesoluble matter in polypropylene / Plastiques - Determination des matieres presentes dans le polypropylene solubles dans le xylene", INTERNATIONAL STANDARD ISO 16152, (20220601), XP093253854 |
| OPPOSITION | - Anonymous, "Plastics - Differential scanning calorimetry (DSC) - Part 6: Determination of oxidation induction time (isothermal OIT) and oxidation induction temperature (dynamic OIT) - (ISO 11357-6:2018) ", ONORM, EN ISO 11357-6, (20180701), XP093253850 |
| OPPOSITION | - Anonymous, "Polypropylene BD310MO ", Borealis, (20071204), pages 1 - 3, XP093151464 |
| OPPOSITION | - " Antioxidants", Hans Zweifel, Ralph D. Maier, Michael Schiller, Plastics additives handbook / [ed. by] Hans Zweifel; Ralph D. Maier; Michael Schiller, DE , München [u.a.] : Hanser, 2009 , (20090101), pages 18; 28 - 30, ISBN 978-1-56990-430-5, XP009559666 |
| OPPOSITION | - Biron, Michel , "4.3 Other Polyolefins", Biron, Michel , Michel Biron, Thermoplastics and Thermoplastic Composites - Series title : Plastics design library, Oxford ; Cambridge, MA : Elsevier, William Andrew, (20140101), pages 245 - 269 +838, ISBN 978-0-08-102501-7, XP009554989 |
| OPPOSITION | - D1a - DECLARATION OF MARKUS GAHLEITNER regarding D1 |
| OPPOSITION | - D20 - Declaration of Markus Gahleitner regarding correlation between intrinsic viscosity (IV) and melt flow rate MFR2 of propylene homopolymers |
| OPPOSITION | - D22 - Declaration of Elena Pomakhina |
| OPPOSITION | - E Albizzati, G. Cecchin, J. C. Chadwick, G. Collina, U. Giannini, G. Morini, L. Noristi, "Catalysts for Polymerization", Polypropylene Handbook. 2nd ed, Munich, Hanser, (20050101), pages 17 - 18, ISBN 978-3-446-22978-5, XP093165559 |
| OPPOSITION | - Maier, "Additives", Polypropylene, the definitive user's guide and databook, Plastics Design Library , (19980101), pages 34 - 47,69-72,397, ISBN 978-1-884207-58-7, XP055495613 |
| OPPOSITION | - Paulik C H, M. Gahleitner ,W Neibi, "Weiche, zahelastische PP-Copolymere", Kunststoffe, (19960101), pages 1 - 4, XP093295443 |
| OPPOSITION | - Markus Gahleitner, Cornelia Tranninger, Petar Doshev, "Heterophasic copolymers of polypropylene: Development, design principles, and future challenges", Journal of Applied Polymer Science, John Wiley & Sons, Inc., US, US , (20131205), vol. 130, no. 5, doi:10.1002/app.39626, ISSN 0021-8995, pages 3028 - 3037, XP055281631 |
| OPPOSITION | - F. Gugumus, "Chapter 6 THE USE OF ACCELERATED TESTS IN THE EVALUATION OF ANTIOXIDANTS AND LIGHT STABILIZERS", F. Gugumus, GERALD SCOTT, DEVELOPMENTS IN POLYMER STABILISATION—8, Elsevier, (19870101), pages 239 - 289, doi:10.1007/978-94-009-3429-0, ISBN 978-94-010-8034-7, XP009559667 |
| OPPOSITION | - Van Der Ven Ser , "Chapter 6 - Characterization of In-Situ Made Toughened Polypropylenes", Van Der Ven Ser , Ser van der Ven, Polypropylene and Other Polyolefins. Polymerization and characterization, ELSEVIER, (19900101), pages 289 - 336, doi:10.1016/B978-0-444-88690-3.50011-3, ISBN 978-0-444-88690-3, XP093295445 |
| OPPOSITION | - Markus Gahleitner, Christelle Grein, Klaus Bernreitner, "Synergistic mechanical effects of calcitemicro- and nanoparticles and ß-nucleation in polypropylene Copolymers", European Polymer Journal, Pergamon Press LTD Oxford, GB, GB , (20120101), vol. 48, doi:10.1016/j.eurpolymj.2011.10.013, ISSN 0014-3057, pages 49 - 59, XP009559664 |
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Decision to grant a European patent
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Feb 29, 2024
(Electronic) Receipt
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Feb 29, 2024
Filing of the translations of the claims
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French translation of claims
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German translation of the claims
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Intention to grant (signatures)
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Examination started
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(Electronic) Receipt
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Abstract
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Abstract
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Amended claims with annotations
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Amended description with annotations
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Amendments received before examination
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Letter accompanying subsequently filed items
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Priority search results copy provided by EPO
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(Electronic) Receipt
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Annex
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Request for entry into the European phase
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Information on entry into European phase
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Copy of the international search report
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Published international application - A1
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ISR: cited documents
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