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The patent EP3661713 was granted to Plastigram Industries on Mar 24, 2021. The application was filed on Jul 19, 2018 under application number EP18759541A. 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 |
|---|---|---|---|
| GRANDCLAUDE | Oct 26, 2021 | ICOSA | ADMISSIBLE |
Patent citations refer to prior patents cited during different phases such as opposition or international search.
| Citation Phase | Publication Number |
|---|---|
| INTERNATIONAL-SEARCH-REPORT | US5351895 |
| INTERNATIONAL-SEARCH-REPORT | US5421526 |
| INTERNATIONAL-SEARCH-REPORT | WO2015169801 |
| INTERNATIONAL-SEARCH-REPORT | WO2016176752 |
| OPPOSITION | CN101891903 |
| OPPOSITION | CN102744246 |
| OPPOSITION | CN102764753 |
| OPPOSITION | CN104690082 |
| OPPOSITION | DE102008056311 |
| OPPOSITION | DE202004021641U |
| OPPOSITION | EP0914209 |
| OPPOSITION | EP2123418 |
| OPPOSITION | EP3024973 |
| OPPOSITION | US5351895 |
| OPPOSITION | US5421526 |
| OPPOSITION | WO03010371 |
| OPPOSITION | WO2015169801 |
| OPPOSITION | WO2016176752 |
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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Dec 8, 2025
Dec 8, 2025
Dec 8, 2025
Aug 19, 2025
Aug 19, 2025
Aug 19, 2025
Aug 8, 2025
Jul 31, 2025
Jul 25, 2025
Refund of fees
Appeal
Jul 23, 2025
Jul 23, 2025
Jul 23, 2025
Jul 23, 2025
Jul 18, 2025
Jul 9, 2025
(Electronic) Receipt
Appeal
Jul 9, 2025
Jul 9, 2025
Withdrawal of an appeal
Appeal
May 19, 2025
May 13, 2025
(Electronic) Receipt
Appeal
May 13, 2025
Authorisation
Appeal
May 13, 2025
May 13, 2025
Mar 21, 2025
Mar 21, 2025
Aug 7, 2024
Aug 2, 2024
(Electronic) Receipt
Appeal
Aug 2, 2024
Aug 2, 2024
Jun 10, 2024
Jun 10, 2024
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Jun 5, 2024
Apr 10, 2024
Mar 26, 2024
Mar 21, 2024
(Electronic) Receipt
Appeal
Mar 21, 2024
Mar 21, 2024
Mar 21, 2024
Mar 21, 2024
Mar 21, 2024
Mar 21, 2024
Mar 21, 2024
Mar 21, 2024
Mar 21, 2024
Mar 21, 2024
Reply to appeal
Appeal
Nov 23, 2023
Nov 10, 2023
(Electronic) Receipt
Appeal
Nov 10, 2023
Nov 10, 2023
Nov 10, 2023
Sep 19, 2023
Sep 19, 2023
Sep 11, 2023
(Electronic) Receipt
Appeal
Sep 11, 2023
Sep 11, 2023
Notice of appeal
Appeal
Sep 1, 2023
Sep 1, 2023
Sep 1, 2023
Aug 25, 2023
Jul 11, 2023
Jul 11, 2023
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Means of redress
OPPO
Jul 11, 2023
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Nov 11, 2021
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Feb 8, 2021
Feb 3, 2021
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Jan 14, 2021
Decision to grant a European patent
Search/Exam
Jan 12, 2021
(Electronic) Receipt
Search/Exam
Jan 12, 2021
Letter accompanying subsequently filed items
Search/Exam
Jan 12, 2021
Dec 22, 2020
(Electronic) Receipt
Search/Exam
Dec 22, 2020
French translation of claims
Search/Exam
Dec 22, 2020
German translation of the claims
Search/Exam
Dec 22, 2020
Letter accompanying subsequently filed items
Search/Exam
Sep 7, 2020
Sep 7, 2020
Sep 7, 2020
Intention to grant (signatures)
Search/Exam
Sep 7, 2020
Text intended for grant (clean copy)
Search/Exam
Sep 7, 2020
Jul 9, 2020
Examination started
Search/Exam
Jul 7, 2020
(Electronic) Receipt
Search/Exam
Jul 7, 2020
Priority search results
Search/Exam
Jul 7, 2020
Jun 4, 2020
May 28, 2020
May 25, 2020
(Electronic) Receipt
Search/Exam
May 25, 2020
Amendments received before examination
Search/Exam
May 25, 2020
Letter accompanying subsequently filed items
Search/Exam
May 13, 2020
Apr 28, 2020
Apr 21, 2020
Apr 21, 2020
Apr 15, 2020
(Electronic) Receipt
Search/Exam
Apr 15, 2020
Authorisation
Search/Exam
Apr 15, 2020
Invitation to file authorisation
Search/Exam
Apr 15, 2020
Letter accompanying subsequently filed items
Search/Exam
Apr 15, 2020
Matter concerning the application
Search/Exam
Mar 25, 2020
Mar 10, 2020
Invitation to file an authorisation
Search/Exam
Mar 6, 2020
Communication to designated inventor
Search/Exam
Mar 2, 2020
Mar 2, 2020
Submission concerning representation
Search/Exam
Feb 3, 2020
Feb 3, 2020
Annex
Search/Exam
Feb 3, 2020
Annex
Search/Exam
Feb 3, 2020
Annex
Search/Exam
Feb 3, 2020
Feb 3, 2020
Letter concerning fees and payments
Search/Exam
Feb 3, 2020
Request for entry into the European phase
Search/Exam
Feb 3, 2020
Submission concerning representation
Search/Exam
Dec 13, 2019
Information on entry into European phase
Search/Exam
Oct 8, 2019
Oct 8, 2019
Oct 8, 2019
Oct 8, 2019
Oct 8, 2019
Sep 13, 2019
Annex
PCT2
Sep 13, 2019
Sep 13, 2019
Sep 13, 2019
Sep 13, 2019
Sep 13, 2019
Jul 17, 2019
Written opinion
PCT2
Jul 17, 2019
Jul 17, 2019
Jun 24, 2019
Notification of election of EPO
Search/Exam
Jun 19, 2019
Jun 12, 2019
Jun 7, 2019
Jun 7, 2019
May 31, 2019
May 31, 2019
PCT demand form
PCT2
May 31, 2019
May 31, 2019
May 31, 2019
Feb 27, 2019
Feb 7, 2019
Copy of the international search report
Search/Exam
Feb 7, 2019
Published international application - A1
Search/Exam
Oct 17, 2018
ISR: cited documents
PCTISA
Oct 16, 2018
Oct 16, 2018
Oct 16, 2018
Sep 11, 2018
Aug 14, 2018
Aug 11, 2018
Abstract
PCTISA
Aug 11, 2018
Annex
PCTISA
Aug 11, 2018
Annex
PCTISA
Aug 11, 2018
Claims
PCTISA
Aug 11, 2018
Description
PCTISA
Aug 11, 2018
Drawings
PCTISA
Aug 11, 2018
Aug 11, 2018
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