The weekly litigation news digest is live. Subscribe now
The patent EP3621806 was granted to Surteco on Apr 14, 2021. The application was filed on May 11, 2018 under application number EP18724232A. 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 |
|---|---|---|---|
| REHAU INDUSTRIES | Jan 14, 2022 | GRUNECKER PATENT | ADMISSIBLE |
Patent citations refer to prior patents cited during different phases such as opposition or international search.
| Citation Phase | Publication Number |
|---|---|
| DESCRIPTION | DE102013022086 |
| DESCRIPTION | EP1163864 |
| DESCRIPTION | EP1852242 |
| DESCRIPTION | EP2366540 |
| DESCRIPTION | EP2653513 |
| DESCRIPTION | WO2009026977 |
| DESCRIPTION | WO2016005337 |
| INTERNATIONAL-SEARCH-REPORT | DE202009009253U |
| INTERNATIONAL-SEARCH-REPORT | DE202015104158U |
| INTERNATIONAL-SEARCH-REPORT | EP2774744 |
| OPPOSITION | DE102013022086 |
| OPPOSITION | DE102015121550 |
| OPPOSITION | DE19921134 |
| OPPOSITION | DE202009009253U |
| OPPOSITION | DE202013102131U |
| OPPOSITION | DE202014106167U |
| OPPOSITION | DE202014106171U |
| OPPOSITION | DE202015104158U |
| OPPOSITION | DE202016101048U |
| OPPOSITION | DE3829675 |
| OPPOSITION | EP1163864 |
| OPPOSITION | EP1852242 |
| OPPOSITION | EP2366540 |
| OPPOSITION | EP2653513 |
| OPPOSITION | EP2774744 |
| OPPOSITION | WO2008135252 |
| OPPOSITION | WO2009026977 |
| OPPOSITION | WO2016005337 |
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
Sep 15, 2025
Mar 18, 2025
Mar 12, 2025
(Electronic) Receipt
Appeal
Mar 12, 2025
Mar 12, 2025
Jan 30, 2025
Jan 27, 2025
(Electronic) Receipt
Appeal
Jan 27, 2025
Jan 27, 2025
Reply to appeal
Appeal
Sep 26, 2024
Sep 23, 2024
(Electronic) Receipt
Appeal
Sep 23, 2024
Sep 23, 2024
Sep 23, 2024
Sep 23, 2024
Sep 23, 2024
Sep 23, 2024
Sep 23, 2024
Sep 23, 2024
Sep 23, 2024
Sep 23, 2024
Sep 23, 2024
Sep 23, 2024
Sep 23, 2024
Sep 23, 2024
Sep 23, 2024
Sep 23, 2024
Sep 23, 2024
Sep 23, 2024
Sep 23, 2024
Sep 23, 2024
Sep 23, 2024
Sep 23, 2024
Sep 23, 2024
Jul 11, 2024
Jul 11, 2024
Jul 8, 2024
(Electronic) Receipt
Appeal
Jul 8, 2024
Jul 8, 2024
Notice of appeal
Appeal
Jun 28, 2024
Jun 28, 2024
Jun 28, 2024
Jun 28, 2024
Jun 28, 2024
Jun 28, 2024
Jun 28, 2024
Means of redress
Search/Exam
Jun 28, 2024
Jun 28, 2024
Jun 28, 2024
Jun 28, 2024
Jun 28, 2024
Jun 26, 2024
May 16, 2024
Apr 23, 2024
Mar 15, 2024
Mar 15, 2024
Mar 15, 2024
Mar 15, 2024
Mar 15, 2024
Mar 15, 2024
Mar 15, 2024
Mar 15, 2024
Mar 15, 2024
Mar 15, 2024
Feb 27, 2024
Feb 19, 2024
Feb 19, 2024
May 24, 2023
May 24, 2023
Apr 4, 2023
Mar 30, 2023
Mar 30, 2023
Mar 30, 2023
Mar 30, 2023
Mar 30, 2023
Mar 30, 2023
Jun 29, 2022
Jun 23, 2022
Jun 23, 2022
Jun 23, 2022
Jun 23, 2022
Jun 23, 2022
Jun 23, 2022
Jun 23, 2022
Jun 23, 2022
Jun 23, 2022
Jun 23, 2022
Jun 23, 2022
Jun 23, 2022
Jun 23, 2022
Jun 23, 2022
Jun 23, 2022
Jun 23, 2022
Jun 23, 2022
Jun 23, 2022
Jun 23, 2022
Jun 23, 2022
Jun 23, 2022
Mar 1, 2022
Feb 23, 2022
Feb 23, 2022
Feb 23, 2022
Feb 14, 2022
Feb 14, 2022
Feb 7, 2022
Feb 7, 2022
Feb 7, 2022
Feb 7, 2022
Jan 25, 2022
Jan 20, 2022
Jan 14, 2022
Jan 14, 2022
Jan 14, 2022
Jan 14, 2022
Jan 14, 2022
Jan 14, 2022
Jan 14, 2022
Jan 14, 2022
Jan 14, 2022
Jan 14, 2022
Jan 14, 2022
Jan 14, 2022
Jan 14, 2022
Jan 14, 2022
Jan 14, 2022
Apr 28, 2021
Mar 18, 2021
Decision to grant a European patent
Search/Exam
Mar 10, 2021
(Electronic) Receipt
Search/Exam
Mar 10, 2021
English translation of the claims
Search/Exam
Mar 10, 2021
Filing of the translations of the claims
Search/Exam
Mar 10, 2021
French translation of claims
Search/Exam
Mar 10, 2021
Letter accompanying subsequently filed items
Search/Exam
Feb 12, 2021
(Electronic) Receipt
Search/Exam
Feb 12, 2021
Letter accompanying subsequently filed items
Search/Exam
Jan 20, 2021
Jan 20, 2021
Jan 20, 2021
Intention to grant (signatures)
Search/Exam
Jan 20, 2021
Text intended for grant (clean copy)
Search/Exam
Jan 20, 2021
Oct 6, 2020
(Electronic) Receipt
Search/Exam
Oct 6, 2020
Amended description with annotations
Search/Exam
Oct 6, 2020
Description
Search/Exam
Oct 6, 2020
Letter accompanying subsequently filed items
Search/Exam
Oct 6, 2020
Sep 7, 2020
Annex to the communication
Search/Exam
Sep 7, 2020
Communication from the Examining Division
Search/Exam
Sep 1, 2020
Examination started
Search/Exam
Jun 15, 2020
(Electronic) Receipt
Search/Exam
Jun 15, 2020
Jun 15, 2020
Amended claims with annotations
Search/Exam
Jun 15, 2020
Amendments received before examination
Search/Exam
Jun 15, 2020
Letter accompanying subsequently filed items
Search/Exam
Mar 20, 2020
(Electronic) Receipt
Search/Exam
Mar 20, 2020
Letter accompanying subsequently filed items
Search/Exam
Mar 16, 2020
Letter concerning the priority
Search/Exam
Mar 16, 2020
Priority document
Search/Exam
Feb 19, 2020
Feb 3, 2020
Invitation to file priority document
Search/Exam
Dec 19, 2019
Dec 17, 2019
Communication to designated inventor
Search/Exam
Dec 17, 2019
Communication to designated inventor
Search/Exam
Dec 17, 2019
Communication to designated inventor
Search/Exam
Nov 26, 2019
Nov 13, 2019
Information regarding early processing
Search/Exam
Nov 5, 2019
(Electronic) Receipt
Search/Exam
Nov 5, 2019
Annex
Search/Exam
Nov 5, 2019
Request for entry into the European phase
Search/Exam
Nov 5, 2019
Sep 20, 2019
Information on entry into European phase
Search/Exam
Feb 12, 2019
Feb 12, 2019
Notification of the recording of a change
Search/Exam
Nov 15, 2018
Copy of the international search report
Search/Exam
Nov 15, 2018
Copy of the international search report
Search/Exam
Nov 15, 2018
Published international application - A1
Search/Exam
Jul 5, 2018
Jul 5, 2018
Jul 5, 2018
Jun 25, 2018
Jun 25, 2018
May 29, 2018
May 11, 2018
(Electronic) Receipt
PCTRO
May 11, 2018
Abstract
PCTRO
May 11, 2018
Claims
PCTRO
May 11, 2018
Description
PCTRO
May 11, 2018
May 11, 2018