The patent EP3794071 was granted to Basell Polyolefine on Jan 26, 2022. The application was originally filed on May 14, 2019 under application number EP19724779A. 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 | EP0395083 |
| DESCRIPTION | US4399054 |
| DESCRIPTION | US4469648 |
| DESCRIPTION | US4829034 |
| DESCRIPTION | US5100849 |
| DESCRIPTION | US6201078 |
| DESCRIPTION | WO2005019280 |
| DESCRIPTION | WO9844009 |
| INTERNATIONAL-SEARCH-REPORT | WO2014134193 |
| INTERNATIONAL-SEARCH-REPORT | WO2014206854 |
| INTERNATIONAL-SEARCH-REPORT | WO2016206958 |
| OPPOSITION | EP1460105 |
| OPPOSITION | US4399905 |
| OPPOSITION | WO2008131817 |
| OPPOSITION | WO2015096900 |
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, "BorSafe™ HE3493-LS-H Natural High Density Polyethylene compound for pressure pipes - Product Data Sheet (Ed. 1)", Borealis, (20170628), Borealis, URL: https://www.mill-pro.com.hk/media/gc0dvovo/he3493ls-h-data-sheet-borealis-1706.pdf, XP093293553 |
| OPPOSITION | - Anonymous, "High-Performance Catalysts for HDPE - A catalyst system for bimodal pipe, film, and blow molding segments", Grace (accessed via the Wayback Machine), (20210517), Grace (accessed via the Wayback Machine), URL: https://web.archive.org/web/20210517133248/https://grace.com/products/lynx-pe/, XP093293556 |
| OPPOSITION | - Anonymous, "Polyethylene BorSafe™ HE3493-LS-H - High Density Polyethylene Compound for Pressure Pipes - Product Data Sheet (Ed. 1)", Borealis, (20230307), Borealis, URL: https://www.borealisgroup.com/storage/Datasheets/borsafe/he3493-ls-h/HE3493-LS-H-PDS-REG_WORLD-EN-V1-PDS-WORLD-36390-PDS_BORSAFE%20HE3493-LS-H_1_07032023.pdf, XP093293559 |
| OPPOSITION | - BARRIOS, A. D. et al., "LYNX (R) 200: An advanced Ziegler-Natta type catalyst for polyethylene production", VISION TECNOLOGICA, (20020000), vol. 9, no. 2, pages 75 - 80, XP055567468 |
| OPPOSITION | - D10 - public prior use document concerning HE3493-LS-H sale to OPW Sweden AB |
| OPPOSITION | - D11 - Affidavit by Pekka Sormunen |
| OPPOSITION | - D12 - Declaration by Dou Qizheng |
| OPPOSITION | - D13 - Affidavit by Andreas Albrecht |
| OPPOSITION | - D14 - Declaration by Kalle Kallio |
| OPPOSITION | - D15 - Affidavit by Gabriele Poinsitt |
| OPPOSITION | - D16 - Affidavit by Peter de Vos |
| OPPOSITION | - D19 - CMR document concerning receipt of BorSafe HE3493-LS-H batch 5160748 by OPW Sweden |
| OPPOSITION | - D21 - Declaration by Andreas Albrecht concerning deconvolution included therein as Annex D22-D25 |
| OPPOSITION | - D26 - Declaration by Qizheng Dou concerning the measures for lowering MFR21 and experimental report concerning further experiments |
| OPPOSITION | - D6 - overview shipping to OPW Sweden AB, Extena Plast AB, Frank Kunststofftechnik Gmbh) |
| OPPOSITION | - D7 - overview clearance showing OPW Sweden AB, Extena Plast AB, Frank Kunststofftechnik GmbH |
| OPPOSITION | - D8 - public prior use document concerning HE3493-LS-H sale to Frank Kunststofftechnik GmbH |
| OPPOSITION | - D9 - public prior use document concerning HE3493-LS-H sale to Extena Plast AB |
| OPPOSITION | - Deslauriers Paul J, Rohlfing David C, "Estimating Polyethylene Densities from Molecular Weight and Short Chain Branching Distributions", Advances in Polyolefins, (20090101), pages 1 - 34, XP093128357 |
| OPPOSITION | - Don L. Peters // Don L. Peters; J. R. Rathman, "Appendix B: MARLEX/PHILLIPS POLYETHYLENE TECHNICAL INFORMATION BULLETIN 32: Part 1. Blow Molding Highly Irregular Shaped Parts With Moving Mold Sections // Part 2. Blow Molding Highly Irregular Shaped Parts With Multiple Parting Lines", Don L. Peters // Don L. Peters; J. R. Rathman, Belcher, S.L., Practical Extrusion Blow Molding, CRC Press, (19990618), vol. 54, pages 293 - 308, ISBN 0-8247-1997-2, XP009562522 |
| OPPOSITION | - Dennis B. Malpass, "An Overview of Industrial Polyethylene Processes", Dennis B. Malpass, Malpass, Dennis B., Introduction to Industrial Polyethylene- Properties, Catalysts, Processes, John Wiley & Sons, Inc. , (20100628), pages 85 - 97, doi:10.1002/9780470900468.ch7, ISBN 978-0-470-62598-9, XP009562523 |
| OPPOSITION | - Zahedi Mostafa, Ahmadi Mostafa, Nekoomanesh Mehdi, "Influence of molecular weight distribution on flow properties of commercial polyolefins", Journal of applied polymer science, Wiley Subscription Services, Inc., A Wiley Company, New York, New York, (20080615), vol. 108, no. 6, doi:10.1002/app.28035, ISSN 0021-8995, pages 3565 - 3571, XP055793927 |
| OPPOSITION | - Alghyamah Abdulaziz A., Soares João B. P., "Simultaneous Deconvolution of the Bivariate Distribution of Molecular Weight and Chemical Composition of Polyolefins Made with Ziegler‐Natta Catalysts", MACROMOLECULAR RAPID COMMUNICATIONS, Wiley-VCH, DE, DE , (20090218), vol. 30, no. 4-5, doi:10.1002/marc.200800592, ISSN 1022-1336, pages 384 - 393, XP093293550 |
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Decision to grant a European patent
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Dec 29, 2021
Letter accompanying subsequently filed items
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Dec 29, 2021
Letter concerning the inventor
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Dec 21, 2021
(Electronic) Receipt
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Dec 21, 2021
French translation of claims
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Dec 21, 2021
German translation of the claims
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Dec 21, 2021
Letter accompanying subsequently filed items
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Intention to grant (signatures)
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Text intended for grant (clean copy)
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Examination started
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(Electronic) Receipt
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Amended description with annotations
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Amendments received before examination
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Description
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Letter accompanying subsequently filed items
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Communication to designated inventor
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Communication to designated inventor
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Communication to designated inventor
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Communication to designated inventor
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Communication to designated inventor
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Priority search results copy provided by EPO
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(Electronic) Receipt
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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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Notification of the recording of a change
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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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Abstract
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Claims
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Description
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