Photovoltaic Power Generation Inverter System

Patent No. EP3771065 (titled "Photovoltaic Power Generation Inverter System") was filed by Huawei on Sep 20, 2019. The application was issued on May 22, 2024.

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
SMA SOLAR TECHNOLOGY	Feb 21, 2025	LAHNOR

Dossier Documents

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

Jun 17, 2026
Information about the result of oral proceedings
May 7, 2026
Brief communication - opposition proceedings
May 6, 2026
(Electronic) Receipt
May 6, 2026
Letter accompanying subsequently filed items
May 6, 2026
Written submission in preparation to/during oral proceedings
Apr 29, 2026
Brief communication - opposition proceedings
Apr 21, 2026
Brief communication - opposition proceedings
Apr 17, 2026
(Electronic) Receipt
Apr 17, 2026
Request for interpreters during oral proceedings
Apr 14, 2026
Brief communication - opposition proceedings
Apr 13, 2026
(Electronic) Receipt
Apr 13, 2026
Auxiliary request during Opposition procedure
Apr 13, 2026
Auxiliary request during Opposition procedure
Apr 13, 2026
Auxiliary request during Opposition procedure
Apr 13, 2026
Auxiliary request during Opposition procedure
Apr 13, 2026
Auxiliary request during Opposition procedure
Apr 13, 2026
Auxiliary request during Opposition procedure
Apr 13, 2026
Auxiliary request during Opposition procedure
Apr 13, 2026
Auxiliary request during Opposition procedure
Apr 13, 2026
Auxiliary request during Opposition procedure
Apr 13, 2026
Auxiliary request during Opposition procedure
Apr 13, 2026
Auxiliary request during Opposition procedure
Apr 13, 2026
Auxiliary request during Opposition procedure
Apr 13, 2026
Auxiliary request during Opposition procedure
Apr 13, 2026
Auxiliary request during Opposition procedure
Apr 13, 2026
Auxiliary request during Opposition procedure
Apr 13, 2026
Auxiliary request during Opposition procedure - 01
Apr 13, 2026
Auxiliary request during Opposition procedure - 01
Apr 13, 2026
Auxiliary request during Opposition procedure - 02
Apr 13, 2026
Auxiliary request during Opposition procedure - 02
Apr 13, 2026
Auxiliary request during Opposition procedure - 03
Apr 13, 2026
Auxiliary request during Opposition procedure - 03
Apr 13, 2026
Auxiliary request during Opposition procedure - 04
Apr 13, 2026
Auxiliary request during Opposition procedure - 04
Apr 13, 2026
Auxiliary request during Opposition procedure - 05
Apr 13, 2026
Auxiliary request during Opposition procedure - 05
Apr 13, 2026
Auxiliary request during Opposition procedure - 06
Apr 13, 2026
Auxiliary request during Opposition procedure - 06
Apr 13, 2026
Auxiliary request during Opposition procedure - 07
Apr 13, 2026
Auxiliary request during Opposition procedure - 07
Apr 13, 2026
Auxiliary request during Opposition procedure - 08
Apr 13, 2026
Brief communication - opposition proceedings
Apr 13, 2026
Letter accompanying subsequently filed items
Apr 13, 2026
Written submission in preparation to/during oral proceedings
Apr 10, 2026
(Electronic) Receipt
Apr 10, 2026
Letter accompanying subsequently filed items
Apr 10, 2026
Request for interpreters during oral proceedings
Nov 7, 2025
Annex to the communication - opposition
Nov 7, 2025
Information concerning oral proceedings
Nov 7, 2025
Scanned annex to a communication - opposition procedure
Nov 7, 2025
Summons to attend oral proceedings
Nov 7, 2025
Summons to attend oral proceedings
Jul 10, 2025
Brief communication - Opposition proceedings
Jul 7, 2025
(Electronic) Receipt
Jul 7, 2025
Letter accompanying subsequently filed items
Jul 7, 2025
Reply of the patent proprietor to the notice(s) of opposition
Mar 7, 2025
Communication of a notice of opposition and request to file observations
Mar 7, 2025
Notice of further oppositions to opponent(s)
Feb 25, 2025
Communication of a notice of opposition - first information to patent proprietor
Feb 21, 2025
(Electronic) Receipt
Feb 21, 2025
Any annexes (other than citation) to an opposition letter
Feb 21, 2025
Citation in opposition procedure - 001
Feb 21, 2025
Citation in opposition procedure - 002
Feb 21, 2025
Citation in opposition procedure - 003
Feb 21, 2025
Citation in opposition procedure - 004
Feb 21, 2025
Citation in opposition procedure - 005
Feb 21, 2025
Citation in opposition procedure - 006
Feb 21, 2025
Citation in opposition procedure - 007
Feb 21, 2025
Consolidated list of cited opposition documents
Feb 21, 2025
Notice of opposition
Feb 21, 2025
Notice of opposition
Jun 5, 2024
Transmission of the certificate for a European patent pursuant to Rule 74 EPC
Apr 25, 2024
Decision to grant a European patent
Apr 10, 2024
(Electronic) Receipt
Apr 10, 2024
Filing of the translations of the claims
Apr 10, 2024
French translation of claims
Apr 10, 2024
German translation of the claims
Jan 5, 2024
Annex to the communication about intention to grant a European patent
Jan 5, 2024
Bibliographic data of the European patent application
Jan 5, 2024
Communication about intention to grant a European patent
Jan 5, 2024
Intention to grant (signatures)
Jan 5, 2024
Text intended for grant (clean copy)
Jan 5, 2024
Text intended for grant (version for approval)
Dec 4, 2023
Notification concerning the date of oral proceedings
Nov 3, 2023
(Electronic) Receipt
Nov 3, 2023
Amended claims with annotations
Nov 3, 2023
Claims
Nov 3, 2023
Letter accompanying subsequently filed items
Nov 3, 2023
Written submission in preparation to/during oral proceedings
Jul 20, 2023
Annex to the communication
Jul 20, 2023
Summons to attend oral proceedings
Jul 4, 2023
Letter accompanying subsequently filed items
Apr 4, 2023
(Electronic) Receipt
Apr 4, 2023
Amended claims with annotations
Apr 4, 2023
Claims
Apr 4, 2023
Letter accompanying subsequently filed items
Apr 4, 2023
Reply to communication from the Examining Division
Dec 6, 2022
Annex to the communication
Dec 6, 2022
Communication from the Examining Division
Nov 30, 2022
Examination started
Jul 6, 2022
(Electronic) Receipt
Dec 1, 2021
Communication of the registration of a transfer or change of name and/or address
Nov 24, 2021
(Electronic) Receipt
Nov 24, 2021
Annexes in respect of a client data request
Nov 24, 2021
Annexes in respect of a client data request
Nov 24, 2021
Annexes in respect of a client data request
Nov 24, 2021
Letter accompanying subsequently filed items
Nov 24, 2021
Submission concerning a transfer of rights (applicant)
Jun 21, 2021
(Electronic) Receipt
Jun 21, 2021
Letter accompanying subsequently filed items
Jun 21, 2021
Priority search results
Jun 1, 2021
Invitation to file a copy of search results(priority)
May 21, 2021
(Electronic) Receipt
May 21, 2021
Amended claims filed after receipt of (European) search report
May 21, 2021
Amended claims with annotations
May 21, 2021
Amended description filed after receipt of (European) search report
May 21, 2021
Amended description with annotations
May 21, 2021
Amendments received before examination
May 21, 2021
Letter accompanying subsequently filed items
Apr 6, 2021
Copy of the international preliminary report on patentability
Apr 6, 2021
Translation of the international preliminary report on patentability
Feb 19, 2021
Invitation to declare maintenance of the application and to correct deficiencies in the Written Opinion/amend application
Feb 2, 2021
Communication regarding the transmission of the European search report
Feb 2, 2021
European search opinion
Feb 2, 2021
Information on Search Strategy
Feb 2, 2021
Supplementary European search report
Jan 21, 2021
Search started
Jan 13, 2021
Notification of forthcoming publication
Dec 22, 2020
Transmission of a document (International preliminary examination report)
Nov 13, 2020
Copy of the international preliminary report on patentability
Nov 13, 2020
Transmission of a document (International preliminary examination report)
Oct 30, 2020
Communication to designated inventor
Oct 30, 2020
Communication to designated inventor
Oct 30, 2020
Communication to designated inventor
Oct 30, 2020
Confirmation of effective date of early entry
Oct 22, 2020
(Electronic) Receipt
Oct 22, 2020
Abstract
Oct 22, 2020
Amended claims filed after receipt of (European) search report
Oct 22, 2020
Amended claims with annotations
Oct 22, 2020
Amended description filed after receipt of (European) search report
Oct 22, 2020
Amended description with annotations
Oct 22, 2020
Annex
Oct 22, 2020
Annex
Oct 22, 2020
Claims
Oct 22, 2020
Description
Oct 22, 2020
Drawings
Oct 22, 2020
Request for entry into the European phase
Apr 14, 2020
Priority document (electronically transmitted)
Apr 14, 2020
Priority document (electronically transmitted)
Mar 26, 2020
Copy of the international search report
Mar 26, 2020
Copy of the translated international search report
Mar 26, 2020
International publication pamphlet

EP3771065

HUAWEI

Application Number: EP19862695A
Filing Date: Sep 20, 2019
Status: Granted And Under Opposition; Apr 19, 2024
Publication Date: May 22, 2024
External Links: Slate, Register , Google Patents

IP Verse

Photovoltaic Power Generation Inverter System

Patent Summary

Patent Family

Patent Oppositions

Dossier Documents

EP3771065