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The patent EP3271755 was granted to Hoya Optical Labs OF America on May 3, 2023. The application was originally filed on Mar 18, 2016 under application number EP16765845A. 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.
Patent citations refer to prior patents cited during different phases such as opposition or international search.
| Citation Phase | Publication Number |
|---|---|
| DESCRIPTION | JP2005215038 |
| DESCRIPTION | US2013222913 |
| DESCRIPTION | US2014174912 |
| DESCRIPTION | US7482036 |
| INTERNATIONAL-SEARCH-REPORT | US2009141357 |
| INTERNATIONAL-SEARCH-REPORT | US2009189303 |
| INTERNATIONAL-SEARCH-REPORT | US2010014144 |
| INTERNATIONAL-SEARCH-REPORT | US2013222913 |
| INTERNATIONAL-SEARCH-REPORT | US2333051 |
| INTERNATIONAL-SEARCH-REPORT | US5751481 |
| INTERNATIONAL-SEARCH-REPORT | US7144598 |
| OPPOSITION | JP2005215038 |
| OPPOSITION | US2004156983 |
| OPPOSITION | US2009141357 |
| OPPOSITION | US2009189303 |
| OPPOSITION | US2013222913 |
| OPPOSITION | US2014347625 |
| OPPOSITION | US7482036 |
| SEARCH | JP2005215038 |
| SEARCH | US2013222913 |
| SEARCH | US7482036 |
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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Nov 3, 2025
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Means of redress
OPPO
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May 16, 2023
Apr 6, 2023
Decision to grant a European patent
Search/Exam
Mar 22, 2023
(Electronic) Receipt
Search/Exam
Mar 22, 2023
Filing of the translations of the claims
Search/Exam
Mar 22, 2023
French translation of claims
Search/Exam
Mar 22, 2023
German translation of the claims
Search/Exam
Mar 22, 2023
Letter accompanying subsequently filed items
Search/Exam
Jan 3, 2023
Dec 16, 2022
Letter accompanying subsequently filed items
Search/Exam
Dec 16, 2022
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Intention to grant (signatures)
Search/Exam
Nov 29, 2022
Text intended for grant (clean copy)
Search/Exam
Nov 29, 2022
Oct 4, 2022
Sep 28, 2022
(Electronic) Receipt
Search/Exam
Sep 28, 2022
Annexes in respect of a client data request
Search/Exam
Sep 28, 2022
Letter accompanying subsequently filed items
Search/Exam
Sep 28, 2022
Jun 19, 2022
(Electronic) Receipt
Search/Exam
Jun 19, 2022
Amended claims with annotations
Search/Exam
Jun 19, 2022
Amended description with annotations
Search/Exam
Jun 19, 2022
Claims
Search/Exam
Jun 19, 2022
Description
Search/Exam
Jun 19, 2022
Letter accompanying subsequently filed items
Search/Exam
Jun 19, 2022
Feb 15, 2022
Annex to the communication
Search/Exam
Feb 15, 2022
Communication from the Examining Division
Search/Exam
Feb 10, 2022
Examination started
Search/Exam
Apr 23, 2019
(Electronic) Receipt
Search/Exam
Apr 23, 2019
Apr 23, 2019
Amended claims with annotations
Search/Exam
Apr 23, 2019
Amendments received before examination
Search/Exam
Apr 23, 2019
Letter accompanying subsequently filed items
Search/Exam
Oct 23, 2018
Oct 4, 2018
Oct 4, 2018
European search opinion
Search/Exam
Oct 4, 2018
Information on Search Strategy
Search/Exam
Oct 4, 2018
Supplementary European search report
Search/Exam
Sep 24, 2018
Search started
Search/Exam
Jan 4, 2018
Oct 25, 2017
Oct 23, 2017
Communication to designated inventor
Search/Exam
Oct 23, 2017
Communication to designated inventor
Search/Exam
Oct 23, 2017
Communication to designated inventor
Search/Exam
Oct 2, 2017
Sep 19, 2017
(Electronic) Receipt
Search/Exam
Sep 19, 2017
Sep 19, 2017
Amended claims with annotations
Search/Exam
Sep 19, 2017
Amendments received before examination
Search/Exam
Sep 19, 2017
Request for entry into the European phase
Search/Exam
Jul 26, 2017
Information on entry into European phase
Search/Exam
Oct 11, 2016
Sep 22, 2016
Copy of the international search report
Search/Exam
Sep 22, 2016
Published international application - A1
Search/Exam