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The patent EP3256662 was granted to Hilti on May 24, 2023. The application was filed on Feb 5, 2016 under application number EP16703121A. The patent is currently recorded with a legal status of "Patent Maintained As Amended".

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 |
|---|---|---|---|
| TREMCO CPG GERMANY | Dec 8, 2020 | HANNKE BITTNER & PARTNER MBB REGENSBURG | ADMISSIBLE |
Patent citations refer to prior patents cited during different phases such as opposition or international search.
| Citation Phase | Publication Number |
|---|---|
| INTERNATIONAL-SEARCH-REPORT | US1960137 |
| INTERNATIONAL-SEARCH-REPORT | US2011011019 |
| INTERNATIONAL-SEARCH-REPORT | US2013031856 |
| INTERNATIONAL-SEARCH-REPORT | US3041682 |
| OPPOSITION | AT385899B |
| OPPOSITION | DE102007034112 |
| OPPOSITION | DE19930836 |
| OPPOSITION | DE202010008322U |
| OPPOSITION | DE3404221 |
| OPPOSITION | EP0312937 |
| OPPOSITION | EP1983119 |
| OPPOSITION | US1960137 |
| OPPOSITION | US2011011019 |
| OPPOSITION | US2011123801 |
| OPPOSITION | US2012023846 |
| OPPOSITION | US2012110934 |
| OPPOSITION | US2013031856 |
| OPPOSITION | US3041682 |
| OPPOSITION | US4839223 |
| OPPOSITION | US8739495 |
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.
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Decision to grant a European patent
Search/Exam
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(Electronic) Receipt
Search/Exam
Jan 9, 2020
English translation of the claims
Search/Exam
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Filing of the translations of the claims
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French translation of claims
Search/Exam
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Letter accompanying subsequently filed items
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Intention to grant (signatures)
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Nov 15, 2019
Text intended for grant (clean copy)
Search/Exam
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Examination started
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(Electronic) Receipt
Search/Exam
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Amended claims with annotations
Search/Exam
Mar 15, 2018
Amendments received before examination
Search/Exam
Mar 15, 2018
Letter accompanying subsequently filed items
Search/Exam
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Communication to designated inventor
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Communication to designated inventor
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Communication to designated inventor
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Communication to designated inventor
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Sep 16, 2017
Priority search results copy provided by EPO
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Information regarding early processing
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Notification of the recording of a change
Search/Exam
Apr 12, 2017
(Electronic) Receipt
Search/Exam
Apr 12, 2017
Request for entry into the European phase
Search/Exam
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Copy of the international search report
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Copy of the international search report
Search/Exam
Aug 18, 2016
Published international application - A1
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(Electronic) Receipt
PCTRO
Feb 5, 2016
Abstract
PCTRO
Feb 5, 2016
Claims
PCTRO
Feb 5, 2016
Description
PCTRO
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