Extract from the Register of European Patents

EP About this file: EP4399360

EP4399360 - METHOD FOR THE TREATMENT OF A FIBROUS RAW MATERIAL [Right-click to bookmark this link]
StatusThe patent has been granted
Status updated on  19.12.2025
Database last updated on 28.03.2026
FormerGrant of patent is intended
Status updated on  10.08.2025
FormerExamination is in progress
Status updated on  21.02.2025
FormerRequest for examination was made
Status updated on  14.06.2024
FormerThe international publication has been made
Status updated on  17.03.2023
Formerunknown
Status updated on  05.11.2022
Most recent event   Tooltip19.12.2025(Expected) grantpublished on 21.01.2026  [2026/04]
Applicant(s)For all designated states
Infinited Fiber Company Oy
Tekniikantie 14
02150 Espoo / FI
[2024/29]
Inventor(s)01 / SIREN, Sakari
02150 Espoo / FI
02 / STJERNBERG, Martin
02150 Espoo / FI
 [2024/29]
Representative(s)Laine IP Oy
Porkkalankatu 24
00180 Helsinki / FI
[2024/29]
Application number, filing date22793774.506.09.2022
[2024/29]
WO2022FI50588
Priority number, dateFI2021000594909.09.2021         Original published format: FI 20215949
[2024/29]
Filing languageEN
Procedural languageEN
PublicationType: A1 Application with search report
No.:WO2023037048
Date:16.03.2023
Language:EN
[2023/11]
Type: A1 Application with search report 
No.:EP4399360
Date:17.07.2024
Language:EN
The application published by WIPO in one of the EPO official languages on 16.03.2023 takes the place of the publication of the European patent application.
[2024/29]
Type: B1 Patent specification 
No.:EP4399360
Date:21.01.2026
Language:EN
[2026/04]
Search report(s)International search report - published on:EP16.03.2023
ClassificationIPC:D04H1/425, D04H1/4258, D04H1/4274, D21C3/02, D21C3/04, D21C3/26, D21C9/00, D21C9/02, D21H11/12, D21H13/24
[2024/29]
CPC:
D04H1/425 (EP,KR); C08J11/00 (FI); D01G11/00 (US);
D01F13/02 (FI); D04H1/4258 (EP,KR); D04H1/4274 (EP,KR);
D21C3/02 (EP,KR); D21C3/04 (EP,KR); D21C3/26 (EP,KR);
D21H11/12 (EP,KR); D21H13/24 (EP,KR); Y02W30/62 (EP) (-)
Designated contracting statesAL,   AT,   BE,   BG,   CH,   CY,   CZ,   DE,   DK,   EE,   ES,   FI,   FR,   GB,   GR,   HR,   HU,   IE,   IS,   IT,   LI,   LT,   LU,   LV,   MC,   MK,   MT,   NL,   NO,   PL,   PT,   RO,   RS,   SE,   SI,   SK,   SM,   TR [2024/29]  
Extension statesBANot yet paid
MENot yet paid
Validation statesKHNot yet paid
MANot yet paid
MDNot yet paid
TNNot yet paid
TitleGerman:VERFAHREN ZUR BEHANDLUNG EINES FASERROHSTOFFES[2024/29]
English:METHOD FOR THE TREATMENT OF A FIBROUS RAW MATERIAL[2024/29]
French:PROCÉDÉ DE TRAITEMENT D'UNE MATIÈRE PREMIÈRE FIBREUSE[2024/29]
Entry into regional phase08.03.2024National basic fee paid 
08.03.2024Designation fee(s) paid 
08.03.2024Examination fee paid 
Examination procedure08.03.2024Examination requested  [2024/29]
08.03.2024Date on which the examining division has become responsible
11.09.2024Amendment by applicant (claims and/or description)
20.02.2025Despatch of a communication from the examining division (Time limit: M04)
17.06.2025Reply to a communication from the examining division
11.08.2025Communication of intention to grant the patent
04.12.2025Fee for grant paid
04.12.2025Fee for publishing/printing paid
04.12.2025Receipt of the translation of the claim(s)
Fees paidRenewal fee
20.09.2024Renewal fee patent year 03
08.09.2025Renewal fee patent year 04
Opt-out from the exclusive  Tooltip
competence of the Unified
Patent Court
See the Register of the Unified Patent Court for opt-out data
Responsibility for the accuracy, completeness or quality of the data displayed under the link provided lies entirely with the Unified Patent Court.
Cited inInternational search[AD] WO2020013755  (SOEDRA SKOGSAEGARNA EKONOMISK FOERENING et al.)
ExaminationWO2020251463
by applicantWO2013124265
 WO2018197756
 WO2010124944
 WO2014162062
 US7662953
 US8066903
 EP3511448
 WO2020013755
 US4345039
The EPO accepts no responsibility for the accuracy of data originating from other authorities; in particular, it does not guarantee that it is complete, up to date or fit for specific purposes.