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The patent EP2781492 was granted to United States Gypsum on Jul 24, 2019. The application was filed on Feb 24, 2012 under application number EP14169525A. The patent is currently recorded with a legal status of "Revoked".

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 | Apr 23, 2020 | MEWBURN ELLIS | ADMISSIBLE |
Patent citations refer to prior patents cited during different phases such as opposition or international search.
| Citation Phase | Publication Number |
|---|---|
| DESCRIPTION | US2007048490 |
| DESCRIPTION | US2007255032 |
| DESCRIPTION | US2008090068 |
| DESCRIPTION | US2010139528 |
| DESCRIPTION | US2078199 |
| DESCRIPTION | US2526066 |
| DESCRIPTION | US2744022 |
| DESCRIPTION | US3454456 |
| DESCRIPTION | US3573947 |
| DESCRIPTION | US3616173 |
| DESCRIPTION | US5643510 |
| DESCRIPTION | US5683635 |
| DESCRIPTION | US5798425 |
| DESCRIPTION | US6342284 |
| DESCRIPTION | US6409825 |
| DESCRIPTION | US6632550 |
| DESCRIPTION | US6777517 |
| DESCRIPTION | US6815049 |
| DESCRIPTION | US7731794 |
| DESCRIPTION | US7736720 |
| DESCRIPTION | US7767019 |
| DESCRIPTION | US7803226 |
| DESCRIPTION | US7892472 |
| OPPOSITION | GB1561232 |
| OPPOSITION | US2005263925 |
| OPPOSITION | US2526066 |
| OPPOSITION | US3616173 |
| OPPOSITION | US4159302 |
| SEARCH | CN101012119 |
| SEARCH | US2005263925 |
| SEARCH | US4159302 |
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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Oct 21, 2020
Oct 21, 2020
Oct 16, 2020
Aug 11, 2020
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Jun 30, 2020
Jun 17, 2020
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May 6, 2020
Annexes in respect of a client data request
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May 6, 2020
Letter accompanying subsequently filed items
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May 6, 2020
Apr 30, 2020
Apr 23, 2020
Apr 23, 2020
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Apr 23, 2020
Apr 23, 2020
Apr 23, 2020
Aug 5, 2019
Jun 27, 2019
Decision to grant a European patent
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May 29, 2019
Filing of the translations of the claims
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May 29, 2019
French translation of claims
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May 29, 2019
German translation of the claims
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May 28, 2019
Filing of the translations of the claims
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May 28, 2019
French translation of claims
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May 28, 2019
German translation of the claims
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Feb 20, 2019
Feb 20, 2019
Feb 20, 2019
Intention to grant (signatures)
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Feb 20, 2019
Text intended for grant (clean copy)
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Feb 20, 2019
Feb 15, 2019
Dec 20, 2018
(Electronic) Receipt
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Dec 20, 2018
Amended claims with annotations
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Dec 20, 2018
Amended description with annotations
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Dec 20, 2018
Claims
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Dec 20, 2018
Description
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Dec 20, 2018
Letter accompanying subsequently filed items
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Dec 20, 2018
Letter dealing with oral proceedings
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May 9, 2018
Submission concerning representation
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May 9, 2018
Submission concerning representation
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May 8, 2018
Advice of delivery
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May 8, 2018
Advice of delivery
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Apr 30, 2018
Acknowledgement of a document
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Apr 30, 2018
Annex to the communication
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Apr 30, 2018
Preparation for oral proceedings
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Apr 30, 2018
Summons to attend oral proceedings
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Aug 4, 2017
(Electronic) Receipt
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Aug 4, 2017
Letter accompanying subsequently filed items
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Aug 4, 2017
Jun 27, 2017
Annex to the communication
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Jun 27, 2017
Mar 21, 2017
(Electronic) Receipt
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Mar 21, 2017
Amended claims with annotations
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Mar 21, 2017
Claims
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Mar 21, 2017
Letter accompanying subsequently filed items
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Mar 21, 2017
Feb 2, 2017
Jan 31, 2017
Jan 30, 2017
Sep 21, 2016
Annex to the communication
Search/Exam
Sep 21, 2016
Communication from the Examining Division
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Jul 20, 2016
(Electronic) Receipt
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Jul 20, 2016
Amended claims with annotations
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Jul 20, 2016
Claims
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Jul 20, 2016
Letter accompanying subsequently filed items
Search/Exam
Jul 20, 2016
Jul 20, 2016
Jul 7, 2016
Submission concerning representation
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May 12, 2016
May 7, 2016
May 6, 2016
Jan 11, 2016
Annex to the communication
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Jan 11, 2016
Communication from the Examining Division
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Sep 24, 2015
(Electronic) Receipt
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Sep 24, 2015
Sep 24, 2015
Amended claims with annotations
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Sep 24, 2015
Sep 24, 2015
Amended description with annotations
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Sep 24, 2015
Sep 24, 2015
Amended drawings with annotations
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Sep 24, 2015
Amendments received before examination
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Sep 24, 2015
Letter accompanying subsequently filed items
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Sep 24, 2015
Letter concerning fees and payments
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Mar 30, 2015
Mar 4, 2015
Refund of fees
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Feb 19, 2015
Feb 19, 2015
European search opinion
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Feb 19, 2015
European search report
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Oct 2, 2014
Sep 29, 2014
Aug 27, 2014
Notification of forthcoming publication
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Aug 11, 2014
Communication to designated inventor
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Aug 11, 2014
Communication to designated inventor
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Aug 11, 2014
Communication to designated inventor
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Aug 11, 2014
Communication to designated inventor
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Aug 11, 2014
Communication to designated inventor
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Jul 23, 2014
Refund of fees
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Jul 23, 2014
Refund of fees
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Jun 4, 2014
May 22, 2014
Abstract
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May 22, 2014
May 22, 2014
Claims
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May 22, 2014
Description
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May 22, 2014
Designation of inventor
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May 22, 2014
Designation of inventor
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May 22, 2014
Designation of inventor
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May 22, 2014
Designation of inventor
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May 22, 2014
Designation of inventor
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May 22, 2014
Drawings
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May 22, 2014
Request for grant of a European patent
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Sep 19, 2012