The patent EP2935405 was granted to Solvay Specialty Polymers USA on Sep 23, 2020. The application was originally filed on Dec 18, 2013 under application number EP13811472A. 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 | 
|---|---|
| INTERNATIONAL-SEARCH-REPORT | EP0106023 | 
| INTERNATIONAL-SEARCH-REPORT | WO2004055927 | 
| INTERNATIONAL-SEARCH-REPORT | WO2010112508 | 
| INTERNATIONAL-SEARCH-REPORT | WO2011020823 | 
| OPPOSITION | DE19501063 | 
| OPPOSITION | DE19525681 | 
| OPPOSITION | DE3330154 | 
| OPPOSITION | DE3836582 | 
| OPPOSITION | DE3843438 | 
| OPPOSITION | DE4216588 | 
| OPPOSITION | EP0297363 | 
| OPPOSITION | EP0356948 | 
| OPPOSITION | US2009283476 | 
| OPPOSITION | WO2010069813 | 
| OPPOSITION | WO2010112508 | 
| OPPOSITION | WO2011020823 | 
| OPPOSITION | WO2011073196 | 
| OPPOSITION | WO2011073197 | 
| OPPOSITION | WO2011107389 | 
| OPPOSITION | WO2011117153 | 
| OPPOSITION | WO2011147758 | 
| OPPOSITION | WO2012156327 | 
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, S, Pesu P, Psu, Ppsu, "Ultrason® E, S, P (PESU, PSU, PPSu Hauptbroschüre", basf the chemical company, (20100101), basf the chemical company , (20220712), XP055941201 | 
| OPPOSITION | - Anonymous, "Typische Eigenschaften", Typische Eigenschaften, (20080101), XP055941210 | 
| OPPOSITION | - Basf, "Ultrason® E, S, P (PESU, PSU, PPSU) - Sortimentsübersicht", (20100901), pages 1 - 12, XP055902163 | 
| OPPOSITION | - Jurgen Falbe, "Polysulfone", Römpp Chemie Lexikon, (19950101), page 3572, XP055941196 | 
Get a free citation report including examiner, opposition, and international search citations.
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Description
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(Electronic) Receipt
Appeal
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Appeal
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Appeal
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Appeal
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Notice of appeal
Appeal
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Oct 5, 2020
Aug 27, 2020
Decision to grant a European patent
Search/Exam
Aug 17, 2020
(Electronic) Receipt
Search/Exam
Aug 17, 2020
Filing of the translations of the claims
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Aug 17, 2020
French translation of claims
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Aug 17, 2020
German translation of the claims
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Aug 17, 2020
Letter accompanying subsequently filed items
Search/Exam
May 6, 2020
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Intention to grant (signatures)
Search/Exam
May 6, 2020
Text intended for grant (clean copy)
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May 6, 2020
Mar 5, 2019
(Electronic) Receipt
Search/Exam
Mar 5, 2019
Description
Search/Exam
Mar 5, 2019
Letter accompanying subsequently filed items
Search/Exam
Mar 5, 2019
Nov 28, 2018
Annex to the communication
Search/Exam
Nov 28, 2018
Communication from the Examining Division
Search/Exam
Nov 22, 2018
Examination started
Search/Exam
Jul 26, 2018
Feb 9, 2016
(Electronic) Receipt
Search/Exam
Feb 9, 2016
Letter accompanying subsequently filed items
Search/Exam
Feb 9, 2016
Reply to Written Opinion prepared by the EPO
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Sep 30, 2015
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Jul 28, 2015
Communication to designated inventor
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Jul 28, 2015
Communication to designated inventor
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Jul 28, 2015
Communication to designated inventor
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Jul 23, 2015
Priority search results copy provided by EPO
Search/Exam
Jul 7, 2015
Jun 2, 2015
(Electronic) Receipt
Search/Exam
Jun 2, 2015
Request for entry into the European phase
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May 4, 2015
Information on entry into European phase
Search/Exam
Jul 17, 2014
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Jun 26, 2014
Copy of the international search report
Search/Exam
Jun 26, 2014
Published international application - A1
Search/Exam
May 21, 2014
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Feb 12, 2014
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Dec 18, 2013
(Electronic) Receipt
PCTRO
Dec 18, 2013
Abstract
PCTRO
Dec 18, 2013
Claims
PCTRO
Dec 18, 2013
Description
PCTRO
Dec 18, 2013