The weekly litigation news digest is live. Subscribe now
The patent EP3781901 was granted to Hexagon Metrology on Jul 5, 2023. The application was filed on Apr 2, 2019 under application number EP19718027A. 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 |
|---|---|---|---|
| CARL ZEISS | Apr 4, 2024 | BEHR | ADMISSIBLE |
Patent citations refer to prior patents cited during different phases such as opposition or international search.
| Citation Phase | Publication Number |
|---|---|
| INTERNATIONAL-SEARCH-REPORT | US2005263727 |
| INTERNATIONAL-SEARCH-REPORT | US2016341533 |
| INTERNATIONAL-SEARCH-REPORT | WO2018060693 |
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
Nov 3, 2025
Nov 3, 2025
Nov 3, 2025
Nov 3, 2025
Nov 3, 2025
Nov 3, 2025
Nov 3, 2025
Nov 3, 2025
Means of redress
OPPO
Nov 3, 2025
Nov 3, 2025
Nov 3, 2025
Nov 3, 2025
Nov 3, 2025
Nov 3, 2025
Oct 31, 2025
Oct 30, 2025
Oct 22, 2025
Oct 22, 2025
Jul 23, 2025
May 30, 2025
May 27, 2025
May 27, 2025
May 26, 2025
May 23, 2025
May 23, 2025
May 23, 2025
May 23, 2025
May 23, 2025
May 23, 2025
May 23, 2025
May 23, 2025
May 23, 2025
May 23, 2025
May 23, 2025
May 23, 2025
May 23, 2025
May 22, 2025
May 21, 2025
May 21, 2025
May 21, 2025
May 19, 2025
May 19, 2025
May 19, 2025
May 19, 2025
May 19, 2025
May 19, 2025
Feb 7, 2025
Feb 7, 2025
Feb 7, 2025
Feb 7, 2025
Feb 7, 2025
Feb 7, 2025
Feb 7, 2025
Nov 22, 2024
Nov 20, 2024
Nov 20, 2024
Nov 20, 2024
Aug 21, 2024
Aug 19, 2024
Aug 19, 2024
Aug 19, 2024
Aug 19, 2024
Aug 19, 2024
Aug 19, 2024
Aug 19, 2024
Aug 19, 2024
Aug 19, 2024
Aug 19, 2024
Aug 19, 2024
Apr 19, 2024
Apr 19, 2024
Apr 16, 2024
Apr 10, 2024
Apr 10, 2024
Apr 10, 2024
Apr 10, 2024
Apr 10, 2024
Apr 10, 2024
Apr 10, 2024
Apr 4, 2024
Apr 4, 2024
Apr 4, 2024
Apr 4, 2024
Apr 4, 2024
Apr 4, 2024
Apr 4, 2024
Apr 4, 2024
Apr 4, 2024
Apr 4, 2024
Jul 18, 2023
Jun 9, 2023
Decision to grant a European patent
Search/Exam
May 30, 2023
Filing of the translations of the claims
Search/Exam
May 30, 2023
French translation of claims
Search/Exam
May 30, 2023
German translation of the claims
Search/Exam
Feb 7, 2023
Feb 7, 2023
Feb 7, 2023
Feb 7, 2023
Intention to grant (signatures)
Search/Exam
Feb 7, 2023
Text intended for grant (clean copy)
Search/Exam
Feb 7, 2023
Jan 16, 2023
Examination started
Search/Exam
May 21, 2021
May 21, 2021
Amended claims with annotations
Search/Exam
May 21, 2021
May 21, 2021
Amended description with annotations
Search/Exam
May 21, 2021
Amendments received before examination
Search/Exam
Jan 27, 2021
Nov 24, 2020
Nov 20, 2020
Communication to designated inventor
Search/Exam
Nov 20, 2020
Communication to designated inventor
Search/Exam
Nov 2, 2020
Oct 28, 2020
(Electronic) Receipt
Search/Exam
Oct 28, 2020
Request for entry into the European phase
Search/Exam
Aug 28, 2020
Information on entry into European phase
Search/Exam
Nov 11, 2019
Oct 24, 2019
Copy of the international search report
Search/Exam
Oct 24, 2019
Published international application - A1
Search/Exam
Jun 25, 2019
ISR: cited documents
PCTISA
Jun 25, 2019
Jun 25, 2019
Jun 25, 2019
Apr 30, 2019
Apr 15, 2019
Abstract
PCTISA
Apr 15, 2019
Annex
PCTISA
Apr 15, 2019
Claims
PCTISA
Apr 15, 2019
Description
PCTISA
Apr 15, 2019
Drawings
PCTISA
Apr 15, 2019
Apr 15, 2019
Apr 15, 2019
Apr 15, 2019
Apr 15, 2019