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The patent EP3749172 was granted to Pupil Labs on Jan 1, 2025. The application was filed on Feb 9, 2018 under application number EP18709267A. 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.
Patent citations refer to prior patents cited during different phases such as opposition or international search.
| Citation Phase | Publication Number |
|---|---|
| INTERNATIONAL-SEARCH-REPORT | CN107545302 |
| INTERNATIONAL-SEARCH-REPORT | US2014055747 |
| INTERNATIONAL-SEARCH-REPORT | US2016267708 |
| INTERNATIONAL-SEARCH-REPORT | US2017332901 |
| OPPOSITION | CN107545302 |
| OTHER | EP3750028 |
| OTHER | WO2017151206 |
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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Description
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Refund of fees
Search/Exam
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(Electronic) Receipt
Appeal
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Withdrawal of an appeal
Appeal
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(Electronic) Receipt
Appeal
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Notice of appeal
Appeal
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OPPO
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OPPO
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OPPO
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Description
OPPO
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OPPO
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OPPO
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OPPO
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OPPO
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OPPO
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Decision to grant a European patent
Search/Exam
Jan 13, 2022
(Electronic) Receipt
Search/Exam
Jan 13, 2022
Filing of the translations of the claims
Search/Exam
Jan 13, 2022
French translation of claims
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Jan 13, 2022
German translation of the claims
Search/Exam
Jan 13, 2022
Letter accompanying subsequently filed items
Search/Exam
Oct 12, 2021
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Observations by third parties
Search/Exam
Sep 30, 2021
Patent document filed by a Third party
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Sep 30, 2021
Patent document filed by a Third party
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Sep 30, 2021
Patent document filed by a Third party
Search/Exam
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Intention to grant (signatures)
Search/Exam
Sep 28, 2021
Text intended for grant (clean copy)
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Sep 28, 2021
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Observations by third parties
Search/Exam
Aug 23, 2021
Patent document filed by a Third party
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Aug 12, 2021
Change to the inventor details
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Aug 6, 2021
(Electronic) Receipt
Search/Exam
Aug 6, 2021
Amended claims with annotations
Search/Exam
Aug 6, 2021
Amended description with annotations
Search/Exam
Aug 6, 2021
Claims
Search/Exam
Aug 6, 2021
Description
Search/Exam
Aug 6, 2021
Letter accompanying subsequently filed items
Search/Exam
Aug 6, 2021
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Intention to grant (signatures)
Search/Exam
Jul 27, 2021
Text intended for grant (clean copy)
Search/Exam
Jul 27, 2021
Apr 19, 2021
(Electronic) Receipt
Search/Exam
Apr 19, 2021
Amended claims with annotations
Search/Exam
Apr 19, 2021
Claims
Search/Exam
Apr 19, 2021
Letter accompanying subsequently filed items
Search/Exam
Apr 19, 2021
Mar 5, 2021
Annex to the communication
Search/Exam
Mar 5, 2021
Consultation by telephone/in person
Search/Exam
Mar 5, 2021
Feb 15, 2021
Annex to the communication
Search/Exam
Feb 15, 2021
Communication from the Examining Division
Search/Exam
Feb 9, 2021
Examination started
Search/Exam
Nov 18, 2020
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Sep 15, 2020
Communication to designated inventor
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Sep 15, 2020
Communication to designated inventor
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Sep 15, 2020
Communication to designated inventor
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Sep 15, 2020
Communication to designated inventor
Search/Exam
Sep 4, 2020
(Electronic) Receipt
Search/Exam
Sep 4, 2020
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Amended claims with annotations
Search/Exam
Sep 4, 2020
Amendments received before examination
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Sep 4, 2020
Request for entry into the European phase
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Notification of the recording of a change
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Notification of the recording of a change
Search/Exam
Jun 25, 2020
Notification of the recording of a change
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Jun 19, 2020
Information on entry into European phase
Search/Exam
Apr 22, 2020
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Notification of the recording of a change
Search/Exam
Aug 15, 2019
Copy of the international search report
Search/Exam
Aug 15, 2019
Published international application - A1
Search/Exam
Feb 4, 2019
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Oct 17, 2018
ISR: cited documents
PCTISA
Oct 16, 2018
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Feb 9, 2018
(Electronic) Receipt
PCTRO
Feb 9, 2018
Abstract
PCTRO
Feb 9, 2018
Claims
PCTRO
Feb 9, 2018
Description
PCTRO
Feb 9, 2018
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Drawings
PCTRO