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The patent EP1644293 was granted to Pilkington on Apr 13, 2022. The application was filed on Jul 9, 2004 under application number EP04743338A. The patent is currently recorded with a legal status of "Patent Maintained As Amended".

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.
| Company | Opposition Date | Representative | Opposition Status |
|---|---|---|---|
| SAINT GOBAIN | Sep 3, 2019 | SAINT GOBAIN RECHERCHE | ADMISSIBLE |
Patent citations refer to prior patents cited during different phases such as opposition or international search.
| Citation Phase | Publication Number |
|---|---|
| EXAMINATION | EP0825156 |
| EXAMINATION | EP1013620 |
| EXAMINATION | JP2001019471 |
| EXAMINATION | US2002198094 |
| EXAMINATION | US3514175 |
| EXAMINATION | US5308805 |
| EXAMINATION | US5650365 |
| EXAMINATION | US5827344 |
| EXAMINATION | US5877102 |
| EXAMINATION | US5877103 |
| EXAMINATION | US6531422 |
| INTERNATIONAL-SEARCH-REPORT | DE19636301 |
| INTERNATIONAL-SEARCH-REPORT | EP0482535 |
| INTERNATIONAL-SEARCH-REPORT | EP1004550 |
| INTERNATIONAL-SEARCH-REPORT | US6538192 |
| INTERNATIONAL-SEARCH-REPORT | WO9834883 |
| OPPOSITION | EP0386993 |
| OPPOSITION | EP1013620 |
| OPPOSITION | US4584236 |
| OTHER | DE3734982 |
| OTHER | US4584236 |
| OTHER | US5352640 |
| OTHER | WO0102167 |
| OTHER | WO9834883 |
The dossier documents provide a comprehensive record of the patent's prosecution history - including filings, correspondence, and decisions made by patent offices - and are crucial for understanding the patent's legal journey and any challenges it may have faced during examination.
Date
Description
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Mar 17, 2022
Mar 17, 2022
Mar 11, 2022
Mar 3, 2022
Mar 3, 2022
Mar 3, 2022
Mar 3, 2022
Mar 3, 2022
Dec 21, 2021
Dec 21, 2021
Dec 21, 2021
Dec 21, 2021
Refund of fees
Appeal
Dec 17, 2021
Dec 17, 2021
Dec 16, 2021
Dec 14, 2021
Dec 13, 2021
(Electronic) Receipt
Appeal
Dec 13, 2021
Dec 13, 2021
Withdrawal of an appeal
Appeal
Nov 26, 2021
Nov 26, 2021
Nov 26, 2021
Nov 24, 2021
Nov 24, 2021
Oct 26, 2021
(Electronic) Receipt
Appeal
Oct 26, 2021
Oct 26, 2021
Notice of appeal
Appeal
Aug 23, 2021
Aug 18, 2021
Aug 18, 2021
Aug 18, 2021
Aug 18, 2021
Aug 18, 2021
Aug 18, 2021
Aug 18, 2021
Means of redress
OPPO
Aug 18, 2021
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May 7, 2021
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Oct 1, 2020
Oct 1, 2020
Oct 1, 2020
Sep 8, 2020
Sep 8, 2020
Jun 2, 2020
Jun 2, 2020
Jun 2, 2020
Jun 1, 2020
May 25, 2020
Communication of amended entries
Search/Exam
May 19, 2020
May 19, 2020
May 19, 2020
May 19, 2020
May 19, 2020
May 19, 2020
May 19, 2020
May 5, 2020
May 5, 2020
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Feb 6, 2020
Jan 31, 2020
Jan 31, 2020
Jan 31, 2020
Sep 23, 2019
Sep 23, 2019
Sep 12, 2019
Sep 3, 2019
Sep 3, 2019
Sep 3, 2019
Sep 3, 2019
Sep 3, 2019
Sep 3, 2019
Dec 17, 2018
Nov 8, 2018
Decision to grant a European patent
Search/Exam
Oct 31, 2018
Sep 28, 2018
(Electronic) Receipt
Search/Exam
Sep 28, 2018
Filing of the translations of the claims
Search/Exam
Sep 28, 2018
French translation of claims
Search/Exam
Sep 28, 2018
German translation of the claims
Search/Exam
Sep 28, 2018
Letter accompanying subsequently filed items
Search/Exam
Sep 28, 2018
Sep 28, 2018
May 31, 2018
May 31, 2018
May 31, 2018
Intention to grant (signatures)
Search/Exam
May 31, 2018
Text intended for grant (clean copy)
Search/Exam
May 31, 2018
Mar 27, 2018
(Electronic) Receipt
Search/Exam
Mar 27, 2018
Amended description with annotations
Search/Exam
Mar 27, 2018
Description
Search/Exam
Mar 27, 2018
Letter accompanying subsequently filed items
Search/Exam
Mar 27, 2018
Mar 23, 2018
(Electronic) Receipt
Search/Exam
Mar 23, 2018
Amended claims with annotations
Search/Exam
Mar 23, 2018
Claims
Search/Exam
Mar 23, 2018
Letter accompanying subsequently filed items
Search/Exam
Mar 23, 2018
Jan 29, 2018
Jan 23, 2018
(Electronic) Receipt
Search/Exam
Jan 23, 2018
Letter accompanying subsequently filed items
Search/Exam
Jan 23, 2018
Sep 15, 2017
Annex to the communication
Search/Exam
Sep 15, 2017
Communication from the Examining Division
Search/Exam
Jun 7, 2017
(Electronic) Receipt
Search/Exam
Jun 7, 2017
Amended description with annotations
Search/Exam
Jun 7, 2017
Description
Search/Exam
Jun 7, 2017
Letter accompanying subsequently filed items
Search/Exam
Jun 7, 2017
Apr 28, 2017
Apr 20, 2017
(Electronic) Receipt
Search/Exam
Apr 20, 2017
Letter accompanying subsequently filed items
Search/Exam
Apr 20, 2017
Dec 19, 2016
Annex to the communication
Search/Exam
Dec 19, 2016
Communication from the Examining Division
Search/Exam
Jul 22, 2016
(Electronic) Receipt
Search/Exam
Jul 22, 2016
Amended claims with annotations
Search/Exam
Jul 22, 2016
Amended claims with annotations
Search/Exam
Jul 22, 2016
Amended description with annotations
Search/Exam
Jul 22, 2016
Claims
Search/Exam
Jul 22, 2016
Claims
Search/Exam
Jul 22, 2016
Description
Search/Exam
Jul 22, 2016
Letter accompanying subsequently filed items
Search/Exam
Jul 22, 2016
May 18, 2016
May 11, 2016
(Electronic) Receipt
Search/Exam
May 11, 2016
Letter accompanying subsequently filed items
Search/Exam
May 11, 2016
Jan 12, 2016
Annex to the communication
Search/Exam
Jan 12, 2016
Communication from the Examining Division
Search/Exam
Apr 24, 2014
(Electronic) Receipt
Search/Exam
Apr 24, 2014
Amended claims with annotations
Search/Exam
Apr 24, 2014
Claims
Search/Exam
Apr 24, 2014
Letter accompanying subsequently filed items
Search/Exam
Apr 24, 2014
Feb 18, 2014
Feb 10, 2014
(Electronic) Receipt
Search/Exam
Feb 10, 2014
Letter accompanying subsequently filed items
Search/Exam
Feb 10, 2014
Oct 18, 2013
Annex to the communication
Search/Exam
Oct 18, 2013
Communication from the Examining Division
Search/Exam
Feb 26, 2013
Feb 7, 2013
Observations by third parties
Search/Exam
Feb 7, 2013
Patent document filed by a Third party
Search/Exam
Feb 7, 2013
Patent document filed by a Third party
Search/Exam
Feb 7, 2013
Patent document filed by a Third party
Search/Exam
Feb 7, 2013
Patent document filed by a Third party
Search/Exam
Feb 7, 2013
Patent document filed by a Third party
Search/Exam
Mar 3, 2009
Feb 25, 2009
Nov 28, 2006
Nov 15, 2006
Request for change of representative
Search/Exam
Oct 14, 2006
Amended claims with annotations
Search/Exam
Oct 14, 2006
Claims
Search/Exam
Oct 14, 2006
Oct 12, 2006
Amended claims with annotations
Search/Exam
Oct 12, 2006
Claims
Search/Exam
Oct 12, 2006
Oct 12, 2006
Oct 5, 2006
Request for change of name
Search/Exam
Aug 7, 2006
Aug 2, 2006
Jul 28, 2006
Apr 5, 2006
Annex to the communication
Search/Exam
Apr 5, 2006
Communication from the Examining Division
Search/Exam
Mar 1, 2006
Mar 1, 2006
Dec 9, 2005
Matter concerning the application
Search/Exam
Dec 9, 2005
Request for entry into the European phase
Search/Exam
Dec 2, 2005
Information on entry into European phase
Search/Exam
Aug 31, 2005
Aug 25, 2005
Copy of the international search report
Search/Exam
Aug 25, 2005
Feb 15, 2005
Feb 15, 2005
Jan 27, 2005
Published international application - A2
Search/Exam
Jul 30, 2004
Abstract
PCTISA
Jul 30, 2004
Claims
PCTISA
Jul 30, 2004
Description
PCTISA
Jul 30, 2004
Drawings
PCTISA