The patent EP2640694 was granted to Basf on Jan 9, 2019. The application was originally filed on Nov 14, 2011 under application number EP11782610A. The patent is currently recorded with a legal status of "Opposition Rejected".

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 | CN101003497 |
| DESCRIPTION | DD288593 |
| DESCRIPTION | DD288598 |
| DESCRIPTION | DD288599 |
| DESCRIPTION | DE102005004170 |
| DESCRIPTION | DE102005055189 |
| DESCRIPTION | DE10333929 |
| DESCRIPTION | DE1923214 |
| DESCRIPTION | DE1938384 |
| DESCRIPTION | DE2631168 |
| DESCRIPTION | EP0079516 |
| DESCRIPTION | EP0116847 |
| DESCRIPTION | EP0133538 |
| DESCRIPTION | EP0524507 |
| DESCRIPTION | EP0866057 |
| DESCRIPTION | EP1270544 |
| DESCRIPTION | EP1449826 |
| DESCRIPTION | EP1475367 |
| DESCRIPTION | EP1616857 |
| DESCRIPTION | JPH06345707 |
| DESCRIPTION | US3912600 |
| DESCRIPTION | US5364958 |
| DESCRIPTION | WO2004056756 |
| DESCRIPTION | WO2006130405 |
| DESCRIPTION | WO2008006775 |
| DESCRIPTION | WO2008049783 |
| DESCRIPTION | WO9940059 |
| INTERNATIONAL-SEARCH-REPORT | EP0116847 |
| INTERNATIONAL-SEARCH-REPORT | EP1506957 |
| INTERNATIONAL-SEARCH-REPORT | EP1561746 |
| INTERNATIONAL-SEARCH-REPORT | EP1792895 |
| OPPOSITION | EP0538500 |
| OPPOSITION | GB1413074 |
| OPPOSITION | US2004236139 |
| OPPOSITION | US2005020797 |
| OPPOSITION | US2007015934 |
| OPPOSITION | US2007117997 |
| OPPOSITION | US3366661 |
| OPPOSITION | US4118286 |
| OPPOSITION | US4465638 |
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 | - "13.12 4,4-DIPHENYLMETHANEOUSOCYANATE (MDI)", G.F. ARKENBOUT, Melt Crystallization Technology, Technomic Publishing, (19950000), XP055650713 |
| OPPOSITION | - anonymous, "Crash cooling polymeric MDI", Research Disclosure, (20070500), vol. 517, no. 017, XP007137274 |
| OPPOSITION | - "Isocyanate reactions with isocyanates", D. RANDALL et al., The polyurethanes book, John Wiley & Sons, (20020000), pages 118 - 119, XP055650705 |
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Date
Description
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Dec 19, 2023
Dec 19, 2023
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(Electronic) Receipt
Appeal
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(Electronic) Receipt
Appeal
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(Electronic) Receipt
Appeal
Oct 11, 2023
(Electronic) Receipt
Appeal
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Sep 28, 2023
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Appeal
Sep 28, 2023
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(Electronic) Receipt
Appeal
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Reply to appeal
Appeal
Jan 19, 2022
Jan 11, 2022
(Electronic) Receipt
Appeal
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(Electronic) Receipt
Appeal
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(Electronic) Receipt
Appeal
Aug 12, 2021
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(Electronic) Receipt
Appeal
Aug 4, 2021
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Notice of appeal
Appeal
Jul 7, 2021
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Means of redress
OPPO
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Jan 21, 2019
Dec 13, 2018
Decision to grant a European patent
Search/Exam
Nov 19, 2018
(Electronic) Receipt
Search/Exam
Nov 19, 2018
English translation of the claims
Search/Exam
Nov 19, 2018
Filing of the translations of the claims
Search/Exam
Nov 19, 2018
French translation of claims
Search/Exam
Aug 3, 2018
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Text intended for grant (clean copy)
Search/Exam
Aug 3, 2018
Jul 17, 2017
(Electronic) Receipt
Search/Exam
Jul 17, 2017
Amended claims with annotations
Search/Exam
Jul 17, 2017
Claims
Search/Exam
Jul 17, 2017
Letter accompanying subsequently filed items
Search/Exam
Jul 17, 2017
May 17, 2017
Annex to the communication
Search/Exam
May 17, 2017
Communication from the Examining Division
Search/Exam
Feb 15, 2017
Feb 15, 2017
Submission concerning representation
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Mar 16, 2016
Mar 10, 2016
Mar 3, 2016
CDS Clean up - amended applicant details
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Mar 3, 2016
Jan 8, 2014
Jan 8, 2014
Amended claims with annotations
Search/Exam
Jan 8, 2014
Amendments received before examination
Search/Exam
Aug 28, 2013
Jun 28, 2013
Jun 26, 2013
Communication to designated inventor
Search/Exam
Jun 26, 2013
Communication to designated inventor
Search/Exam
Jun 26, 2013
Communication to designated inventor
Search/Exam
Jun 22, 2013
Priority search results copy provided by EPO
Search/Exam
Jun 7, 2013
May 14, 2013
(Electronic) Receipt
Search/Exam
May 14, 2013
Request for entry into the European phase
Search/Exam
Apr 2, 2013
Information on entry into European phase
Search/Exam
Jun 11, 2012
May 24, 2012
Copy of the international search report
Search/Exam
May 24, 2012
Copy of the international search report
Search/Exam
May 24, 2012
Published international application - A1
Search/Exam
Jan 18, 2012
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Nov 14, 2011
(Electronic) Receipt
PCTRO
Nov 14, 2011
Abstract
PCTRO
Nov 14, 2011
Claims
PCTRO
Nov 14, 2011
Description
PCTRO
Nov 14, 2011
Drawings
PCTRO
Nov 14, 2011