The weekly litigation news digest is live. Subscribe now
The patent EP3526170 was granted to Saint Gobain on Dec 6, 2023. The application was filed on Oct 12, 2017 under application number EP17794005A. 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.
| Company | Opposition Date | Representative | Opposition Status |
|---|---|---|---|
| STM | Sep 6, 2024 | BOTTI & FERRARI | ADMISSIBLE |
| URSA INSULATION | Sep 6, 2024 | BALDER LAW | ADMISSIBLE |
Patent citations refer to prior patents cited during different phases such as opposition or international search.
| Citation Phase | Publication Number |
|---|---|
| DESCRIPTION | FR1382917 |
| DESCRIPTION | WO02064520 |
| INTERNATIONAL-SEARCH-REPORT | EP0091381 |
| INTERNATIONAL-SEARCH-REPORT | FR2779713 |
| INTERNATIONAL-SEARCH-REPORT | FR2820736 |
| INTERNATIONAL-SEARCH-REPORT | FR2854626 |
| INTERNATIONAL-SEARCH-REPORT | FR2954307 |
| OPPOSITION | EP0091381 |
| OPPOSITION | FR1382917 |
| OPPOSITION | FR2779713 |
| OPPOSITION | FR2820736 |
| OPPOSITION | FR2854626 |
| OPPOSITION | FR2954307 |
| OPPOSITION | US2012270718 |
| OPPOSITION | US4058386 |
| OPPOSITION | US4203774 |
| OPPOSITION | US4759785 |
| OPPOSITION | US4759974 |
| OPPOSITION | US5554324 |
| OPPOSITION | US5601628 |
| OPPOSITION | US6158249 |
| OPPOSITION | US6862901 |
| OPPOSITION | WO02064520 |
| OPPOSITION | WO2014128376 |
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
Get instant alerts for new documents
Oct 8, 2025
Oct 8, 2025
Oct 8, 2025
Oct 8, 2025
Oct 8, 2025
Oct 8, 2025
May 22, 2025
May 22, 2025
May 16, 2025
May 16, 2025
May 16, 2025
May 16, 2025
May 16, 2025
May 16, 2025
May 16, 2025
May 16, 2025
May 16, 2025
May 16, 2025
May 16, 2025
May 16, 2025
May 16, 2025
May 16, 2025
May 16, 2025
May 16, 2025
May 16, 2025
May 16, 2025
May 16, 2025
May 16, 2025
May 16, 2025
May 16, 2025
May 16, 2025
May 16, 2025
May 16, 2025
May 16, 2025
May 16, 2025
May 16, 2025
May 16, 2025
May 16, 2025
May 16, 2025
May 16, 2025
May 16, 2025
May 16, 2025
May 16, 2025
May 16, 2025
May 16, 2025
May 16, 2025
May 16, 2025
May 16, 2025
May 16, 2025
May 16, 2025
May 16, 2025
May 16, 2025
May 16, 2025
May 16, 2025
May 16, 2025
May 16, 2025
May 16, 2025
May 16, 2025
May 16, 2025
May 16, 2025
May 16, 2025
May 16, 2025
May 16, 2025
May 16, 2025
May 16, 2025
May 16, 2025
May 16, 2025
May 16, 2025
May 16, 2025
May 16, 2025
May 16, 2025
May 16, 2025
May 16, 2025
May 16, 2025
May 16, 2025
May 16, 2025
May 16, 2025
May 16, 2025
May 16, 2025
May 16, 2025
May 16, 2025
May 16, 2025
May 16, 2025
May 16, 2025
May 16, 2025
May 16, 2025
May 16, 2025
May 16, 2025
May 16, 2025
May 16, 2025
May 16, 2025
Mar 6, 2025
Mar 6, 2025
Mar 6, 2025
Feb 27, 2025
Feb 27, 2025
Feb 27, 2025
Feb 21, 2025
Feb 21, 2025
Feb 21, 2025
Jan 14, 2025
Jan 14, 2025
Jan 8, 2025
Jan 8, 2025
Jan 8, 2025
Jan 8, 2025
Jan 8, 2025
Dec 19, 2024
Nov 18, 2024
Nov 18, 2024
Nov 18, 2024
Oct 24, 2024
Oct 24, 2024
Oct 18, 2024
Oct 18, 2024
Oct 18, 2024
Oct 18, 2024
Oct 18, 2024
Oct 18, 2024
Oct 18, 2024
Oct 18, 2024
Oct 18, 2024
Oct 18, 2024
Oct 18, 2024
Oct 18, 2024
Oct 18, 2024
Oct 18, 2024
Oct 18, 2024
Oct 18, 2024
Oct 18, 2024
Oct 18, 2024
Oct 18, 2024
Oct 18, 2024
Sep 13, 2024
Sep 13, 2024
Sep 6, 2024
Sep 6, 2024
Sep 6, 2024
Sep 6, 2024
Sep 6, 2024
Sep 6, 2024
Sep 6, 2024
Sep 6, 2024
Sep 6, 2024
Sep 6, 2024
Sep 6, 2024
Sep 6, 2024
Sep 6, 2024
Sep 6, 2024
Sep 6, 2024
Sep 6, 2024
Sep 6, 2024
Sep 6, 2024
Sep 6, 2024
Sep 6, 2024
Sep 6, 2024
Sep 6, 2024
Sep 6, 2024
Sep 6, 2024
Sep 6, 2024
Sep 6, 2024
Sep 6, 2024
Sep 6, 2024
Sep 6, 2024
Sep 6, 2024
Sep 6, 2024
Sep 6, 2024
Sep 6, 2024
Sep 6, 2024
Sep 6, 2024
Sep 6, 2024
Sep 6, 2024
Sep 6, 2024
Sep 6, 2024
Sep 6, 2024
Sep 6, 2024
Sep 6, 2024
Sep 6, 2024
Sep 6, 2024
Sep 6, 2024
Sep 6, 2024
Sep 6, 2024
Sep 6, 2024
Sep 6, 2024
Sep 6, 2024
Sep 6, 2024
Sep 6, 2024
Sep 6, 2024
Sep 6, 2024
Sep 6, 2024
Sep 6, 2024
Sep 6, 2024
Sep 6, 2024
Sep 6, 2024
Sep 6, 2024
Dec 19, 2023
Nov 9, 2023
Decision to grant a European patent
Search/Exam
Oct 27, 2023
(Electronic) Receipt
Search/Exam
Oct 27, 2023
English translation of the claims
Search/Exam
Oct 27, 2023
Filing of the translations of the claims
Search/Exam
Oct 27, 2023
German translation of the claims
Search/Exam
Oct 27, 2023
Letter accompanying subsequently filed items
Search/Exam
Jun 19, 2023
Jun 19, 2023
Jun 19, 2023
Jun 19, 2023
Intention to grant (signatures)
Search/Exam
Jun 19, 2023
Text intended for grant (clean copy)
Search/Exam
Jun 19, 2023
May 24, 2023
Examination started
Search/Exam
May 12, 2020
May 6, 2020
Letter accompanying subsequently filed items
Search/Exam
May 6, 2020
May 6, 2020
Nov 12, 2019
(Electronic) Receipt
Search/Exam
Nov 12, 2019
Letter accompanying subsequently filed items
Search/Exam
Nov 12, 2019
Reply to Written Opinion prepared by the EPO
Search/Exam
Jul 24, 2019
Jul 11, 2019
Submission concerning representation
Search/Exam
May 24, 2019
May 22, 2019
Communication to designated inventor
Search/Exam
May 22, 2019
Communication to designated inventor
Search/Exam
May 17, 2019
Priority search results copy provided by EPO
Search/Exam
May 10, 2019
Mar 20, 2019
(Electronic) Receipt
Search/Exam
Mar 20, 2019
Request for entry into the European phase
Search/Exam
Feb 22, 2019
Information on entry into European phase
Search/Exam
May 9, 2018
Apr 19, 2018
Copy of the international search report
Search/Exam
Apr 19, 2018
Copy of the international search report
Search/Exam
Apr 19, 2018
Published international application - A1
Search/Exam
Jan 24, 2018
Jan 24, 2018
Jan 24, 2018
Nov 17, 2017
Nov 9, 2017
Oct 12, 2017
Abstract
PCTISA
Oct 12, 2017
Claims
PCTISA
Oct 12, 2017
Description
PCTISA
Oct 12, 2017
Drawings
PCTISA
Oct 12, 2017