The weekly litigation news digest is live. Subscribe now
The patent EP3421185 was granted to Koki on Dec 21, 2022. The application was filed on Jan 27, 2017 under application number EP17756085A. 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 |
|---|---|---|---|
| HILTI | Sep 13, 2023 | HILTI CORPORATE | ADMISSIBLE |
Patent citations refer to prior patents cited during different phases such as opposition or international search.
| Citation Phase | Publication Number |
|---|---|
| INTERNATIONAL-SEARCH-REPORT | JP2003340620 |
| INTERNATIONAL-SEARCH-REPORT | JP2009012152 |
| INTERNATIONAL-SEARCH-REPORT | JP2011093073 |
| INTERNATIONAL-SEARCH-REPORT | JP2015150664 |
| OPPOSITION | DE102004003202 |
| OPPOSITION | DE102013202832 |
| OPPOSITION | DE102014007402 |
| OPPOSITION | DE112015000823T |
| OPPOSITION | DE4238564 |
| OPPOSITION | JP2003340620 |
| OPPOSITION | WO2010137446 |
| OTHER | DE102013202832 |
| SEARCH | WO2010137446 |
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 23, 2025
Oct 23, 2025
Oct 13, 2025
Oct 13, 2025
Oct 13, 2025
Oct 13, 2025
Oct 13, 2025
Aug 26, 2025
Aug 26, 2025
Aug 26, 2025
Aug 18, 2025
Aug 6, 2025
Refund of fees
Appeal
Aug 4, 2025
Aug 4, 2025
Aug 4, 2025
Jul 30, 2025
(Electronic) Receipt
Appeal
Jul 30, 2025
Jul 30, 2025
Jul 30, 2025
Withdrawal of an appeal
Appeal
Jun 4, 2025
Jun 4, 2025
May 28, 2025
(Electronic) Receipt
Appeal
May 28, 2025
May 28, 2025
Notice of appeal
Appeal
Apr 1, 2025
Apr 1, 2025
Apr 1, 2025
Apr 1, 2025
Apr 1, 2025
Apr 1, 2025
Apr 1, 2025
Apr 1, 2025
Means of redress
OPPO
Apr 1, 2025
Apr 1, 2025
Apr 1, 2025
Apr 1, 2025
Mar 21, 2025
Feb 12, 2025
Jan 27, 2025
Jan 27, 2025
Jan 23, 2025
Jan 23, 2025
Jan 23, 2025
Jan 9, 2025
Jan 3, 2025
Dec 18, 2024
Dec 12, 2024
Dec 12, 2024
Dec 12, 2024
Dec 11, 2024
Dec 11, 2024
Dec 11, 2024
Dec 11, 2024
Dec 11, 2024
Dec 11, 2024
Dec 11, 2024
Dec 11, 2024
Jun 19, 2024
Jun 12, 2024
Jun 12, 2024
Jun 12, 2024
Jun 5, 2024
Jun 5, 2024
Jun 5, 2024
Jun 5, 2024
Jun 5, 2024
Jun 5, 2024
Feb 21, 2024
Feb 16, 2024
Feb 16, 2024
Feb 16, 2024
Feb 16, 2024
Feb 16, 2024
Feb 16, 2024
Feb 16, 2024
Feb 16, 2024
Feb 16, 2024
Oct 6, 2023
Oct 6, 2023
Sep 19, 2023
Sep 13, 2023
Sep 13, 2023
Sep 13, 2023
Sep 13, 2023
Sep 13, 2023
Sep 13, 2023
Sep 13, 2023
Sep 13, 2023
Sep 13, 2023
Sep 13, 2023
Sep 13, 2023
Sep 13, 2023
Sep 13, 2023
Mar 24, 2023
Mar 20, 2023
Letter accompanying subsequently filed items
Search/Exam
Mar 20, 2023
Jan 11, 2023
Nov 24, 2022
Decision to grant a European patent
Search/Exam
Nov 8, 2022
(Electronic) Receipt
Search/Exam
Nov 8, 2022
(Electronic) Receipt
Search/Exam
Nov 8, 2022
Filing of the translations of the claims
Search/Exam
Nov 8, 2022
French translation of claims
Search/Exam
Nov 8, 2022
German translation of the claims
Search/Exam
Nov 8, 2022
Letter concerning fees and payments
Search/Exam
Nov 8, 2022
Letter concerning fees and payments
Search/Exam
Aug 29, 2022
Aug 29, 2022
Aug 23, 2022
Observations by third parties
Search/Exam
Jul 1, 2022
Jul 1, 2022
Jul 1, 2022
Intention to grant (signatures)
Search/Exam
Jul 1, 2022
Text intended for grant (clean copy)
Search/Exam
Jul 1, 2022
May 19, 2022
(Electronic) Receipt
Search/Exam
May 19, 2022
Amended claims with annotations
Search/Exam
May 19, 2022
Claims
Search/Exam
May 19, 2022
Letter accompanying subsequently filed items
Search/Exam
May 19, 2022
Jan 10, 2022
Jan 10, 2022
Jan 10, 2022
Intention to grant (signatures)
Search/Exam
Jan 10, 2022
Text intended for grant (clean copy)
Search/Exam
Jan 10, 2022
Aug 26, 2021
(Electronic) Receipt
Search/Exam
Aug 26, 2021
Amended claims with annotations
Search/Exam
Aug 26, 2021
Amended description with annotations
Search/Exam
Aug 26, 2021
Claims
Search/Exam
Aug 26, 2021
Description
Search/Exam
Aug 26, 2021
Letter accompanying subsequently filed items
Search/Exam
Aug 26, 2021
Apr 21, 2021
Annex to the communication
Search/Exam
Apr 21, 2021
Communication from the Examining Division
Search/Exam
Apr 13, 2021
Examination started
Search/Exam
May 6, 2020
(Electronic) Receipt
Search/Exam
May 6, 2020
May 6, 2020
Amended claims with annotations
Search/Exam
May 6, 2020
Amendments received before examination
Search/Exam
May 6, 2020
Letter accompanying subsequently filed items
Search/Exam
Oct 15, 2019
Sep 26, 2019
Sep 26, 2019
Sep 26, 2019
Sep 26, 2019
European search opinion
Search/Exam
Sep 26, 2019
Information on Search Strategy
Search/Exam
Sep 26, 2019
Supplementary European search report
Search/Exam
Sep 17, 2019
Search started
Search/Exam
Aug 14, 2019
Aug 8, 2019
Apr 12, 2019
(Electronic) Receipt
Search/Exam
Apr 12, 2019
Apr 12, 2019
Amended claims with annotations
Search/Exam
Apr 12, 2019
Apr 12, 2019
Amendments received before examination
Search/Exam
Apr 12, 2019
Letter accompanying subsequently filed items
Search/Exam
Dec 5, 2018
Notification of forthcoming publication
Search/Exam
Oct 4, 2018
Oct 1, 2018
Communication to designated inventor
Search/Exam
Oct 1, 2018
Communication to designated inventor
Search/Exam
Oct 1, 2018
Communication to designated inventor
Search/Exam
Oct 1, 2018
Communication to designated inventor
Search/Exam
Sep 12, 2018
Sep 12, 2018
Aug 24, 2018
(Electronic) Receipt
Search/Exam
Aug 24, 2018
Abstract
Search/Exam
Aug 24, 2018
Claims
Search/Exam
Aug 24, 2018
Description
Search/Exam
Aug 24, 2018
Drawings
Search/Exam
Aug 24, 2018
Letter concerning the inventor
Search/Exam
Aug 24, 2018
Request for entry into the European phase
Search/Exam
Jul 4, 2018
Information on entry into European phase
Search/Exam
Jun 19, 2018
Notification of the recording of a change
Search/Exam
Jun 19, 2018
Notification of the recording of a change
Search/Exam
Sep 22, 2017
Aug 31, 2017
Copy of the international search report
Search/Exam
Aug 31, 2017
Aug 31, 2017
International publication pamphlet
Search/Exam