Method For Producing Thermoplastic Polyurethanes

Patent No. EP3371234 (titled "Method For Producing Thermoplastic Polyurethanes") was filed by Basf on Oct 14, 2016. The application was issued on Mar 29, 2023.

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
THE LUBRIZOL	Dec 18, 2023	D YOUNG

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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Feb 4, 2026
(Electronic) Receipt
Feb 4, 2026
Letter accompanying subsequently filed items
Feb 4, 2026
Reply to appeal
Oct 15, 2025
F3344 Setting time limit for reply/ file observations to appeal (inter partes)
Oct 10, 2025
(Electronic) Receipt
Oct 10, 2025
Amended claims with annotations
Oct 10, 2025
Amended claims with annotations
Oct 10, 2025
Amended claims with annotations
Oct 10, 2025
Amended claims with annotations
Oct 10, 2025
Amended claims with annotations
Oct 10, 2025
Amended claims with annotations
Oct 10, 2025
Amended claims with annotations
Oct 10, 2025
Amended claims with annotations
Oct 10, 2025
Amended claims with annotations
Oct 10, 2025
Amended claims with annotations
Oct 10, 2025
Amended claims with annotations
Oct 10, 2025
Amended claims with annotations
Oct 10, 2025
Amended claims with annotations
Oct 10, 2025
Amended claims with annotations
Oct 10, 2025
Amended claims with annotations
Oct 10, 2025
Amended claims with annotations
Oct 10, 2025
Amended claims with annotations
Oct 10, 2025
Amended claims with annotations
Oct 10, 2025
Amended claims with annotations
Oct 10, 2025
Amended claims with annotations
Oct 10, 2025
Amended claims with annotations
Oct 10, 2025
Amended claims with annotations
Oct 10, 2025
Amended claims with annotations
Oct 10, 2025
Amended claims with annotations
Oct 10, 2025
Auxiliary request during appeals procedure - 01
Oct 10, 2025
Auxiliary request during appeals procedure - 02
Oct 10, 2025
Auxiliary request during appeals procedure - 03
Oct 10, 2025
Auxiliary request during appeals procedure - 04
Oct 10, 2025
Auxiliary request during appeals procedure - 05
Oct 10, 2025
Auxiliary request during appeals procedure - 06
Oct 10, 2025
Auxiliary request during appeals procedure - 07
Oct 10, 2025
Auxiliary request during appeals procedure - 08
Oct 10, 2025
Auxiliary request during appeals procedure - 09
Oct 10, 2025
Auxiliary request during appeals procedure - 10
Oct 10, 2025
Auxiliary request during appeals procedure - 11
Oct 10, 2025
Auxiliary request during appeals procedure - 12
Oct 10, 2025
Auxiliary request during appeals procedure - 13
Oct 10, 2025
Auxiliary request during appeals procedure - 14
Oct 10, 2025
Auxiliary request during appeals procedure - 15
Oct 10, 2025
Auxiliary request during appeals procedure - 16
Oct 10, 2025
Auxiliary request during appeals procedure - 17
Oct 10, 2025
Auxiliary request during appeals procedure - 18
Oct 10, 2025
Auxiliary request during appeals procedure - 19
Oct 10, 2025
Auxiliary request during appeals procedure - 20
Oct 10, 2025
Auxiliary request during appeals procedure - 21
Oct 10, 2025
Auxiliary request during appeals procedure - 22
Oct 10, 2025
Auxiliary request during appeals procedure - 23
Oct 10, 2025
Auxiliary request during appeals procedure - 24
Oct 10, 2025
Cited document during appeal procedure
Oct 10, 2025
Letter accompanying subsequently filed items
Oct 10, 2025
Statement of grounds of appeal
Aug 11, 2025
F3204 Communication of the file number to the parties
Aug 11, 2025
F3204 Communication of the file number to the parties
Aug 7, 2025
(Electronic) Receipt
Aug 7, 2025
Letter accompanying subsequently filed items
Aug 7, 2025
Notice of appeal
Jun 10, 2025
Annex to the communication - opposition
Jun 10, 2025
Brief communication - Opposition proceedings
Jun 10, 2025
Brief communication - Opposition proceedings
Jun 10, 2025
Decision revoking the European patent
Jun 10, 2025
Decision revoking the European patent
Jun 10, 2025
Grounds for the decision (Annex) - opposition
Jun 10, 2025
Means of redress
Jun 10, 2025
Minutes of the oral proceedings (Opposition Division) - conclusion of the proceedings
Jun 10, 2025
Minutes of the oral proceedings (Opposition Division) - introduction of the parties
Jun 10, 2025
Provision of a copy of the minutes - opposition procedure
Jun 10, 2025
Provision of a copy of the minutes - opposition procedure
Jun 10, 2025
Scanned annex to a communication - opposition procedure
Jun 10, 2025
Scanned annex to a communication - opposition procedure
Jun 6, 2025
Decision of the Opposition Division and instruction
May 20, 2025
Information about the result of oral proceedings
Apr 30, 2025
Brief communication - Opposition proceedings
Apr 24, 2025
(Electronic) Receipt
Apr 24, 2025
Letter accompanying subsequently filed items
Apr 24, 2025
Letter accompanying subsequently filed items
Apr 24, 2025
Written submission in preparation to/during oral proceedings
Apr 23, 2025
Annex to the communication - opposition
Apr 23, 2025
Notification concerning the date of oral proceedings
Apr 23, 2025
Notification concerning the date of oral proceedings
Mar 26, 2025
Brief communication - Opposition proceedings
Mar 26, 2025
Brief communication - Opposition proceedings
Mar 20, 2025
(Electronic) Receipt
Mar 20, 2025
(Electronic) Receipt
Mar 20, 2025
Auxiliary request during Opposition procedure
Mar 20, 2025
Auxiliary request during Opposition procedure
Mar 20, 2025
Auxiliary request during Opposition procedure
Mar 20, 2025
Auxiliary request during Opposition procedure
Mar 20, 2025
Auxiliary request during Opposition procedure
Mar 20, 2025
Auxiliary request during Opposition procedure
Mar 20, 2025
Auxiliary request during Opposition procedure
Mar 20, 2025
Auxiliary request during Opposition procedure
Mar 20, 2025
Auxiliary request during Opposition procedure - 11
Mar 20, 2025
Auxiliary request during Opposition procedure - 12
Mar 20, 2025
Auxiliary request during Opposition procedure - 13
Mar 20, 2025
Auxiliary request during Opposition procedure - 14
Mar 20, 2025
Auxiliary request during Opposition procedure - 15
Mar 20, 2025
Auxiliary request during Opposition procedure - 16
Mar 20, 2025
Auxiliary request during Opposition procedure - 17
Mar 20, 2025
Auxiliary request during Opposition procedure - 18
Mar 20, 2025
Citation in opposition procedure - 001
Mar 20, 2025
Citation in opposition procedure - 012
Mar 20, 2025
Citation in opposition procedure - 013
Mar 20, 2025
Citation in opposition procedure - 014
Mar 20, 2025
Consolidated list of cited opposition documents
Mar 20, 2025
Letter accompanying subsequently filed items
Mar 20, 2025
Letter accompanying subsequently filed items
Mar 20, 2025
Request for interpreters during oral proceedings
Mar 20, 2025
Written submission in preparation to/during oral proceedings
Mar 20, 2025
Written submission in preparation to/during oral proceedings
Nov 20, 2024
(Electronic) Receipt
Nov 20, 2024
Letter accompanying subsequently filed items
Aug 6, 2024
Annex to the communication - opposition
Aug 6, 2024
Information concerning oral proceedings
Aug 6, 2024
Scanned annex to a communication - opposition procedure
Aug 6, 2024
Summons to attend oral proceedings
Aug 6, 2024
Summons to attend oral proceedings
Jul 29, 2024
Brief communication - Opposition proceedings
Jul 23, 2024
(Electronic) Receipt
Jul 23, 2024
Citation in opposition procedure - 001
Jul 23, 2024
Citation in opposition procedure - 010
Jul 23, 2024
Citation in opposition procedure - 010
Jul 23, 2024
Citation in opposition procedure - 011
Jul 23, 2024
Letter regarding the opposition procedure (no time limit)
Jul 23, 2024
Letter regarding the opposition procedure (no time limit)
May 23, 2024
Brief communication - Opposition proceedings
May 16, 2024
(Electronic) Receipt
May 16, 2024
Auxiliary request during Opposition procedure
May 16, 2024
Auxiliary request during Opposition procedure
May 16, 2024
Auxiliary request during Opposition procedure
May 16, 2024
Auxiliary request during Opposition procedure
May 16, 2024
Auxiliary request during Opposition procedure
May 16, 2024
Auxiliary request during Opposition procedure
May 16, 2024
Auxiliary request during Opposition procedure
May 16, 2024
Auxiliary request during Opposition procedure
May 16, 2024
Auxiliary request during Opposition procedure
May 16, 2024
Auxiliary request during Opposition procedure
May 16, 2024
Auxiliary request during Opposition procedure - 01
May 16, 2024
Auxiliary request during Opposition procedure - 02
May 16, 2024
Auxiliary request during Opposition procedure - 03
May 16, 2024
Auxiliary request during Opposition procedure - 04
May 16, 2024
Auxiliary request during Opposition procedure - 05
May 16, 2024
Auxiliary request during Opposition procedure - 06
May 16, 2024
Auxiliary request during Opposition procedure - 07
May 16, 2024
Auxiliary request during Opposition procedure - 08
May 16, 2024
Auxiliary request during Opposition procedure - 09
May 16, 2024
Auxiliary request during Opposition procedure - 10
May 16, 2024
Citation in opposition procedure - 008
May 16, 2024
Citation in opposition procedure - 009
May 16, 2024
Letter accompanying subsequently filed items
May 16, 2024
Reply of the patent proprietor to the notice(s) of opposition
Mar 13, 2024
Letter accompanying subsequently filed items
Jan 19, 2024
Brief communication - Opposition proceedings
Jan 19, 2024
Communication concerning the filing of a power of attorney
Jan 19, 2024
Communication of amended entries concerning the representative
Jan 16, 2024
(Electronic) Receipt
Jan 16, 2024
Communication of a notice of opposition and request to file observations
Jan 16, 2024
Letter accompanying subsequently filed items
Jan 16, 2024
Notice of further oppositions to opponent(s)
Jan 16, 2024
Submission concerning change of proprietor's representative
Dec 21, 2023
Communication of a notice of opposition - first information to patent proprietor
Dec 18, 2023
(Electronic) Receipt
Dec 18, 2023
Citation in opposition procedure - 001
Dec 18, 2023
Citation in opposition procedure - 002
Dec 18, 2023
Citation in opposition procedure - 003
Dec 18, 2023
Citation in opposition procedure - 004
Dec 18, 2023
Citation in opposition procedure - 005
Dec 18, 2023
Citation in opposition procedure - 006
Dec 18, 2023
Citation in opposition procedure - 006
Dec 18, 2023
Citation in opposition procedure - 007
Dec 18, 2023
Notice of opposition
Dec 18, 2023
Notice of opposition
Apr 13, 2023
Transmission of the certificate for a European patent pursuant to Rule 74 EPC
Mar 2, 2023
Decision to grant a European patent
Feb 16, 2023
(Electronic) Receipt
Feb 16, 2023
English translation of the claims
Feb 16, 2023
Filing of the translations of the claims
Feb 16, 2023
French translation of claims
Nov 15, 2022
Communication confirming withdrawal from representation
Nov 15, 2022
Communication of amended entries concerning the representative
Nov 8, 2022
(Electronic) Receipt
Nov 8, 2022
Letter accompanying subsequently filed items
Nov 8, 2022
Submission concerning change of applicant's representative
Oct 25, 2022
Annex to the communication about intention to grant a European patent
Oct 25, 2022
Bibliographic data of the European patent application
Oct 25, 2022
Communication about intention to grant a European patent
Oct 25, 2022
Intention to grant (signatures)
Oct 25, 2022
Text intended for grant (clean copy)
Oct 25, 2022
Text intended for grant (version for approval)
Mar 29, 2021
(Electronic) Receipt
Mar 29, 2021
Amended claims with annotations
Mar 29, 2021
Amended description with annotations
Mar 29, 2021
Claims
Mar 29, 2021
Description
Mar 29, 2021
Letter accompanying subsequently filed items
Mar 29, 2021
Reply to communication from the Examining Division
Nov 24, 2020
Annex to the communication
Nov 24, 2020
Communication from the Examining Division
Jul 8, 2020
(Electronic) Receipt
Jul 8, 2020
Amended claims with annotations
Jul 8, 2020
Claims
Jul 8, 2020
Letter accompanying subsequently filed items
Jul 8, 2020
Reply to communication from the Examining Division
Feb 27, 2020
Annex to the communication
Feb 27, 2020
Communication from the Examining Division
Oct 16, 2019
(Electronic) Receipt
Oct 16, 2019
Amended claims with annotations
Oct 16, 2019
Claims
Oct 16, 2019
Letter accompanying subsequently filed items
Oct 16, 2019
Reply to communication from the Examining Division
Jun 14, 2019
Submission concerning representation
Jun 6, 2019
Annex to the communication
Jun 6, 2019
Communication from the Examining Division
May 29, 2019
Examination started
Jan 14, 2019
(Electronic) Receipt
Jan 14, 2019
Letter accompanying subsequently filed items
Jan 14, 2019
Reply to Written Opinion prepared by the EPO
Aug 16, 2018
Notification on forthcoming publication of bibliographic data
Jul 3, 2018
Communication concerning correction of deficiencies in written opinion/amendment of application/payment of claims fee
Jun 26, 2018
Priority search results copy provided by EPO
Jun 12, 2018
Communication to designated inventor
Jun 12, 2018
Communication to designated inventor
Jun 1, 2018
(Electronic) Receipt
Jun 1, 2018
Request for entry into the European phase
May 16, 2018
Annexes to the international preliminary examination report
May 16, 2018
Copy of the international preliminary examination report
Apr 18, 2018
Notification of the recording of a change
Apr 18, 2018
Notification of the recording of a change
Mar 29, 2018
(Electronic) Receipt
Mar 29, 2018
Incoming letter related to PCT RO
Mar 16, 2018
Information on entry into European phase
Feb 2, 2018
Annex to International preliminary examination report
Feb 2, 2018
International preliminary examination report
Feb 2, 2018
International preliminary examination report - free text sheet
Feb 2, 2018
International preliminary examination report - points I-VIII
Feb 2, 2018
Transmittal of International Preliminary Examination Report
Nov 22, 2017
(Electronic) Receipt
Nov 22, 2017
Letter regarding PCTII procedure
Nov 22, 2017
Reply to communication PCT/IPEA/408
Sep 22, 2017
Written opinion
Sep 22, 2017
Written opinion - free text sheet
Sep 22, 2017
Written opinion - points I-VIII
Sep 11, 2017
Notification of receipt of demand
Sep 4, 2017
(Electronic) Receipt
Sep 4, 2017
PCT demand form
Sep 4, 2017
PCT(IPEA): Amended sheet - claims
Sep 4, 2017
PCT(IPEA): Amended sheet - claims
Sep 4, 2017
Payment of fees and costs
Sep 4, 2017
Reply to International Search Opinion
May 31, 2017
Priority document (electronically transmitted)
May 11, 2017
Copy of the international search report
May 11, 2017
Published international application - A1
Jan 18, 2017
ISR: cited documents
Jan 18, 2017
International Search Report - copy in English for the IB
Jan 17, 2017
Written opinion of the ISA, boxes No. I to VIII
Jan 17, 2017
Written opinion of the ISA, cover sheet
Jan 17, 2017
Written opinion of the ISA, supplemental box
Oct 20, 2016
Notification of the international application number and of the international filing date
Oct 14, 2016
(Electronic) Receipt
Oct 14, 2016
Abstract
Oct 14, 2016
Claims
Oct 14, 2016
Description
Oct 14, 2016
Document concerning fees and payments
Oct 14, 2016
Electronic request for grant of an International application
Oct 14, 2016
Priority document (RO-procedure)

EP3371234

BASF

Application Number: EP16781467A
Filing Date: Oct 14, 2016
Status: Granted And Under Opposition; Feb 24, 2023
Publication Date: Mar 29, 2023
External Links: Slate, Register , Google Patents

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Method For Producing Thermoplastic Polyurethanes

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Dossier Documents

EP3371234