Hybrid Mushroom Strain B14528 And Descendants Thereof

Patent No. EP3107375 (titled "Hybrid Mushroom Strain B14528 And Descendants Thereof") was filed by Sylvan America on Feb 20, 2015. The application was issued on Oct 29, 2025.

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
AMYCEL	Jul 29, 2026	CARPMAELS & RANSFORD

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

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Aug 10, 2026
Communication of a notice of opposition and request to file observations
Aug 10, 2026
Notice of further oppositions to opponent(s)
Aug 4, 2026
Communication of a notice of opposition - first information to patent proprietor
Jul 29, 2026
(Electronic) Receipt
Jul 29, 2026
Citation in opposition procedure - 001
Jul 29, 2026
Citation in opposition procedure - 002
Jul 29, 2026
Citation in opposition procedure - 003
Jul 29, 2026
Citation in opposition procedure - 004
Jul 29, 2026
Citation in opposition procedure - 005
Jul 29, 2026
Consolidated list of cited opposition documents
Jul 29, 2026
Notice of opposition
Jul 29, 2026
Notice of opposition
Nov 11, 2025
Transmission of the certificate for a European patent pursuant to Rule 74 EPC
Oct 2, 2025
Decision to grant a European patent
Sep 18, 2025
(Electronic) Receipt
Sep 18, 2025
Filing of the translations of the claims
Sep 18, 2025
French translation of claims
Sep 18, 2025
German translation of the claims
Sep 18, 2025
Letter accompanying subsequently filed items
May 19, 2025
Annex to the communication about intention to grant a European patent
May 19, 2025
Bibliographic data of the European patent application
May 19, 2025
Communication about intention to grant a European patent
May 19, 2025
Intention to grant (signatures)
May 19, 2025
Text intended for grant (clean copy)
May 19, 2025
Text intended for grant (version for approval)
Nov 26, 2024
(Electronic) Receipt
Nov 26, 2024
Amended claims with annotations
Nov 26, 2024
Amended description with annotations
Nov 26, 2024
Annex
Nov 26, 2024
Claims
Nov 26, 2024
Description
Nov 26, 2024
Letter accompanying subsequently filed items
Nov 26, 2024
Reply to communication from the Examining Division
Sep 25, 2024
Grant of extension of time limit (examination procedure)
Sep 20, 2024
(Electronic) Receipt
Sep 20, 2024
Letter accompanying subsequently filed items
Sep 20, 2024
Request for extension of time limit to communication from the Examining Division
May 31, 2024
Annex to the communication
May 31, 2024
Communication from the Examining Division
Oct 17, 2022
(Electronic) Receipt
Oct 17, 2022
Amended description with annotations
Oct 17, 2022
Description
Oct 17, 2022
Letter accompanying subsequently filed items
Oct 17, 2022
Reply to communication from the Examining Division
Jun 17, 2022
Annex to the communication
Jun 17, 2022
Communication from the Examining Division
Dec 2, 2021
(Electronic) Receipt
Dec 2, 2021
Amended claims with annotations
Dec 2, 2021
Claims
Dec 2, 2021
Letter accompanying subsequently filed items
Dec 2, 2021
Reply to communication from the Examining Division
Oct 12, 2021
Grant of extension of time limit (examination procedure)
Sep 27, 2021
(Electronic) Receipt
Sep 27, 2021
Letter accompanying subsequently filed items
Sep 27, 2021
Request for extension of time limit to communication from the Examining Division
May 28, 2021
Annex to the communication
May 28, 2021
Communication from the Examining Division
Oct 22, 2020
(Electronic) Receipt
Oct 22, 2020
Amended claims with annotations
Oct 22, 2020
Annex
Oct 22, 2020
Annex
Oct 22, 2020
Claims
Oct 22, 2020
Letter accompanying subsequently filed items
Oct 22, 2020
Reply to communication from the Examining Division
Sep 18, 2020
Communication of amended entries concerning the representative
Sep 14, 2020
Letter accompanying subsequently filed items
Sep 14, 2020
Letter accompanying subsequently filed items
Sep 14, 2020
Submission concerning change of applicant's representative
Aug 13, 2020
Grant of extension of time limit (examination procedure)
Aug 10, 2020
(Electronic) Receipt
Aug 10, 2020
Letter accompanying subsequently filed items
Aug 10, 2020
Request for extension of time limit to communication from the Examining Division
Apr 15, 2020
Annex to the communication
Apr 15, 2020
Communication from the Examining Division
Jan 28, 2020
(Electronic) Receipt
Jan 28, 2020
Amended claims with annotations
Jan 28, 2020
Claims
Jan 28, 2020
Letter accompanying subsequently filed items
Jan 28, 2020
Non-patent literature cited during the examination procedure
Jan 28, 2020
Non-patent literature cited during the examination procedure
Jan 28, 2020
Non-patent literature cited during the examination procedure
Jan 28, 2020
Reply to communication from the Examining Division
Nov 25, 2019
Grant of extension of time limit (examination procedure)
Nov 14, 2019
(Electronic) Receipt
Nov 14, 2019
Letter accompanying subsequently filed items
Nov 14, 2019
Request for extension of time limit to communication from the Examining Division
Jul 18, 2019
Annex to the communication
Jul 18, 2019
Communication from the Examining Division
Apr 23, 2019
(Electronic) Receipt
Apr 23, 2019
Claims
Apr 23, 2019
Letter accompanying subsequently filed items
Apr 18, 2019
(Electronic) Receipt
Apr 18, 2019
Amended claims with annotations
Apr 18, 2019
Claims
Apr 18, 2019
Letter accompanying subsequently filed items
Apr 18, 2019
Reply to communication from the Examining Division
Feb 19, 2019
Grant of extension of time limit (examination procedure)
Feb 11, 2019
(Electronic) Receipt
Feb 11, 2019
Letter accompanying subsequently filed items
Feb 11, 2019
Request for extension of time limit to communication from the Examining Division
Oct 9, 2018
Annex to the communication
Oct 9, 2018
Communication from the Examining Division
Oct 1, 2018
Examination started
Jan 5, 2018
(Electronic) Receipt
Jan 5, 2018
Amended claims filed after receipt of (European) search report
Jan 5, 2018
Amended claims with annotations
Jan 5, 2018
Amendments received before examination
Jan 5, 2018
Letter accompanying subsequently filed items
Jun 27, 2017
Invitation to declare maintenance of the application and to correct deficiencies in the Written Opinion/amend application
Jun 8, 2017
Communication regarding the transmission of the European search report
Jun 8, 2017
European search opinion
Jun 8, 2017
Information on Search Strategy
Jun 8, 2017
Supplementary European search report
May 31, 2017
Search started
Apr 20, 2017
Submission concerning representation
Apr 6, 2017
(Electronic) Receipt
Apr 6, 2017
Amended claims filed after receipt of (European) search report
Apr 6, 2017
Amended claims with annotations
Apr 6, 2017
Amendments received before examination
Apr 6, 2017
Amendments received before examination
Apr 6, 2017
Letter accompanying subsequently filed items
Nov 30, 2016
Notification on forthcoming publication of bibliographic data
Oct 10, 2016
(Electronic) Receipt
Oct 10, 2016
Certificate of deposit of biological material
Oct 10, 2016
Certificate of deposit of biological material
Oct 10, 2016
Letter accompanying subsequently filed items
Oct 10, 2016
Letter concerning biological material
Sep 28, 2016
Communication regarding possible amendment of the application/payment of claims fee
Sep 26, 2016
Communication to designated inventor
Sep 26, 2016
Communication to designated inventor
Sep 26, 2016
Communication to designated inventor
Sep 6, 2016
Copy of the international preliminary report on patentability
Aug 5, 2016
Deficiencies concerning the deposit of biological material
Jul 21, 2016
(Electronic) Receipt
Jul 21, 2016
Converted Sequence Listing
Jul 21, 2016
Matter concerning the application
Jul 21, 2016
Request for entry into the European phase
Jul 1, 2016
Information on entry into European phase
Sep 16, 2015
Priority document (electronically transmitted)
Aug 27, 2015
Converted Sequence Listing
Aug 27, 2015
Copy of the international search report
Aug 27, 2015
Published international application - A1

EP3107375

SYLVAN AMERICA

Application Number: EP15751489A
Filing Date: Feb 20, 2015
Status: Granted And Under Opposition; Sep 26, 2025
Publication Date: Oct 29, 2025
External Links: Slate, Register , Google Patents

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Hybrid Mushroom Strain B14528 And Descendants Thereof

Patent Summary

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Dossier Documents

EP3107375