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The patent EP3801993 was granted to Hilti on May 17, 2023. The application was filed on May 29, 2019 under application number EP19726436A. 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 |
|---|---|---|---|
| ILLINOIS TOOL WORKS | Feb 15, 2024 | MEISSNER BOLTE PARTNERSCHAFT MBB | ADMISSIBLE |
Patent citations refer to prior patents cited during different phases such as opposition or international search.
| Citation Phase | Publication Number |
|---|---|
| DESCRIPTION | US6830173 |
| INTERNATIONAL-SEARCH-REPORT | US2018141198 |
| INTERNATIONAL-SEARCH-REPORT | WO0216085 |
| OPPOSITION | US2003183670 |
| OPPOSITION | US2017154747 |
| OPPOSITION | WO03005389 |
| OPPOSITION | WO2011003547 |
| OPPOSITION | WO2012079572 |
| OPPOSITION | WO2014056487 |
| OPPOSITION | WO2018104406 |
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 16, 2025
Oct 16, 2025
Oct 15, 2025
Oct 15, 2025
Oct 13, 2025
(Electronic) Receipt
Appeal
Oct 13, 2025
Oct 13, 2025
Oct 10, 2025
(Electronic) Receipt
Appeal
Oct 10, 2025
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Claims
Appeal
Oct 10, 2025
Claims
Appeal
Oct 10, 2025
Claims
Appeal
Oct 10, 2025
Claims
Appeal
Oct 10, 2025
Claims
Appeal
Oct 10, 2025
Claims
Appeal
Oct 10, 2025
Claims
Appeal
Oct 10, 2025
Claims
Appeal
Oct 10, 2025
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Aug 14, 2025
Aug 14, 2025
Aug 11, 2025
(Electronic) Receipt
Appeal
Aug 11, 2025
Aug 11, 2025
Aug 11, 2025
Notice of appeal
Appeal
Aug 11, 2025
Notice of appeal
Appeal
Aug 5, 2025
(Electronic) Receipt
Appeal
Aug 5, 2025
Aug 5, 2025
Notice of appeal
Appeal
Jun 11, 2025
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Means of redress
OPPO
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Claims
OPPO
Apr 29, 2025
Claims
OPPO
Apr 29, 2025
Claims
OPPO
Apr 29, 2025
Claims
OPPO
Apr 29, 2025
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Summons (notice)
OPPO
Oct 10, 2024
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Jun 12, 2023
Refund of fees
Search/Exam
May 31, 2023
Apr 20, 2023
Decision to grant a European patent
Search/Exam
Apr 5, 2023
(Electronic) Receipt
Search/Exam
Apr 5, 2023
English translation of the claims
Search/Exam
Apr 5, 2023
Filing of the translations of the claims
Search/Exam
Apr 5, 2023
French translation of claims
Search/Exam
Apr 5, 2023
Letter accompanying subsequently filed items
Search/Exam
Feb 28, 2023
Feb 28, 2023
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Intention to grant (signatures)
Search/Exam
Feb 28, 2023
Text intended for grant (clean copy)
Search/Exam
Feb 28, 2023
Jan 6, 2023
Examination started
Search/Exam
Jul 30, 2021
(Electronic) Receipt
Search/Exam
Jul 30, 2021
Letter accompanying subsequently filed items
Search/Exam
Jul 30, 2021
Reply to Written Opinion prepared by the EPO
Search/Exam
Mar 17, 2021
Jan 20, 2021
Jan 18, 2021
Communication to designated inventor
Search/Exam
Jan 18, 2021
Communication to designated inventor
Search/Exam
Jan 18, 2021
Communication to designated inventor
Search/Exam
Jan 13, 2021
Priority search results copy provided by EPO
Search/Exam
Dec 21, 2020
Nov 25, 2020
(Electronic) Receipt
Search/Exam
Nov 25, 2020
Request for entry into the European phase
Search/Exam
Oct 16, 2020
Information on entry into European phase
Search/Exam
Jan 3, 2020
Dec 12, 2019
Copy of the international search report
Search/Exam
Dec 12, 2019
Copy of the international search report
Search/Exam
Dec 12, 2019
Published international application - A1
Search/Exam
Jul 23, 2019
(Electronic) Receipt
PCTRO
Jul 23, 2019
Jul 23, 2019
Jul 23, 2019
Jun 25, 2019
Jun 6, 2019
May 29, 2019
(Electronic) Receipt
PCTRO
May 29, 2019
Abstract
PCTRO
May 29, 2019
Claims
PCTRO
May 29, 2019
Description
PCTRO
May 29, 2019
May 29, 2019
Drawings
PCTRO
May 29, 2019
May 29, 2019