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Extract from the Register of European Patents

EP About this file: EP4172251

EP4172251 - POLYETHYLENE COMPOSITIONS AND FILMS INCLUDING POLYETHYLENE COMPOSITIONS [Right-click to bookmark this link]
StatusNo opposition filed within time limit
Status updated on  28.11.2025
Database last updated on 16.04.2026
FormerThe patent has been granted
Status updated on  20.12.2024
FormerGrant of patent is intended
Status updated on  26.09.2024
FormerExamination is in progress
Status updated on  01.03.2024
FormerRequest for examination was made
Status updated on  31.03.2023
FormerThe international publication has been made
Status updated on  07.01.2022
Formerunknown
Status updated on  10.03.2021
Most recent event   Tooltip23.01.2026Lapse of the patent in a contracting state
New state(s): BE, IE		published on 25.02.2026  [2026/09]
Applicant(s)For all designated states
Dow Global Technologies LLC
2211 H.H. Dow Way
Midland, MI 48674 / US
[2023/18]
Inventor(s)01 / SANDKUEHLER, Peter Hermann Roland
8810 Horgen / CH
02 / BISWAS, Sanjib
Lake Jackson, Texas 77566 / US
03 / GILLESPIE, David T.
Pearland, Texas 77584 / US
04 / DEMIRORS, Mehmet
Pearland, Texas 77584 / US
05 / ZOGG, Michael J., Jr.
Lake Jackson, Texas 77566 / US
 [2023/18]
Representative(s)Boult Wade Tennant LLP
Salisbury Square House
8 Salisbury Square
London EC4Y 8AP / GB
[2023/18]
Application number, filing date21709253.505.02.2021
[2023/18]
WO2021US16815
Priority number, dateUS202063046386P30.06.2020         Original published format: US 202063046386 P
[2023/18]
Filing languageEN
Procedural languageEN
PublicationType: A1 Application with search report
No.:WO2022005533
Date:06.01.2022
Language:EN
[2022/01]
Type: A1 Application with search report 
No.:EP4172251
Date:03.05.2023
Language:EN
The application published by WIPO in one of the EPO official languages on 06.01.2022 takes the place of the publication of the European patent application.
[2023/18]
Type: B1 Patent specification 
No.:EP4172251
Date:22.01.2025
Language:EN
[2025/04]
Search report(s)International search report - published on:EP06.01.2022
ClassificationIPC:C08J5/18, C08L23/08, C08F210/16
[2024/44]
CPC:
C08F210/16 (EP,US); C08F2/001 (US); C08F2/01 (US);
C08J5/18 (EP,US); C08L23/0815 (EP); B32B2250/05 (EP);
B32B2307/581 (EP); B32B2439/46 (EP); B32B27/08 (EP);
B32B27/32 (EP); C08F4/659 (EP); C08F4/65908 (EP);
C08F4/65912 (EP); C08J2323/08 (EP,US); C08J2423/08 (EP);
C08L2205/025 (EP) (-)
C-Set:
C08F210/16, C08F2/001 (EP);
C08F210/16, C08F4/64193 (EP);
C08L23/0815, C08L23/0815, C08L23/0815 (EP);
C08F210/16, C08F210/14, C08F2500/03, C08F2500/12, C08F2500/37 (EP)
Former IPC [2023/18]C08J5/18, C08L23/08
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 [2023/18]
Extension statesBANot yet paid
MENot yet paid
Validation statesKHNot yet paid
MANot yet paid
MDNot yet paid
TNNot yet paid
TitleGerman:POLYETHYLENZUSAMMENSETZUNGEN UND FOLIEN MIT POLYETHYLENZUSAMMENSETZUNGEN[2023/18]
English:POLYETHYLENE COMPOSITIONS AND FILMS INCLUDING POLYETHYLENE COMPOSITIONS[2023/18]
French:COMPOSITIONS DE POLYÉTHYLÈNE ET FILMS COMPRENANT DES COMPOSITIONS DE POLYÉTHYLÈNE[2023/18]
Entry into regional phase10.01.2023National basic fee paid 
10.01.2023Designation fee(s) paid 
10.01.2023Examination fee paid 
Examination procedure10.01.2023Examination requested  [2023/18]
10.01.2023Date on which the examining division has become responsible
12.06.2023Amendment by applicant (claims and/or description)
01.03.2024Despatch of a communication from the examining division (Time limit: M04)
26.06.2024Reply to a communication from the examining division
27.09.2024Communication of intention to grant the patent
13.12.2024Fee for grant paid
13.12.2024Fee for publishing/printing paid
13.12.2024Receipt of the translation of the claim(s)
Opposition(s)23.10.2025No opposition filed within time limit [2026/01]
Fees paidRenewal fee
14.12.2022Renewal fee patent year 03
14.12.2023Renewal fee patent year 04
18.12.2024Renewal fee patent year 05
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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.
Lapses during opposition  TooltipAT22.01.2025
BG22.01.2025
CZ22.01.2025
DK22.01.2025
EE22.01.2025
FI22.01.2025
HR22.01.2025
LV22.01.2025
MC22.01.2025
NL22.01.2025
PL22.01.2025
RO22.01.2025
SE22.01.2025
SK22.01.2025
SM22.01.2025
IE05.02.2025
LU05.02.2025
BE28.02.2025
CH28.02.2025
NO22.04.2025
RS22.04.2025
GR23.04.2025
IS22.05.2025
PT22.05.2025
[2026/09]
Former [2025/49]AT22.01.2025
BG22.01.2025
CZ22.01.2025
DK22.01.2025
EE22.01.2025
FI22.01.2025
HR22.01.2025
LV22.01.2025
MC22.01.2025
NL22.01.2025
PL22.01.2025
RO22.01.2025
SE22.01.2025
SK22.01.2025
SM22.01.2025
LU05.02.2025
CH28.02.2025
NO22.04.2025
RS22.04.2025
GR23.04.2025
IS22.05.2025
PT22.05.2025
Former [2025/48]AT22.01.2025
BG22.01.2025
CZ22.01.2025
DK22.01.2025
EE22.01.2025
FI22.01.2025
HR22.01.2025
LV22.01.2025
MC22.01.2025
NL22.01.2025
PL22.01.2025
SE22.01.2025
SM22.01.2025
LU05.02.2025
CH28.02.2025
NO22.04.2025
RS22.04.2025
GR23.04.2025
IS22.05.2025
PT22.05.2025
Former [2025/47]AT22.01.2025
BG22.01.2025
DK22.01.2025
FI22.01.2025
HR22.01.2025
LV22.01.2025
MC22.01.2025
NL22.01.2025
PL22.01.2025
SE22.01.2025
SM22.01.2025
LU05.02.2025
NO22.04.2025
RS22.04.2025
GR23.04.2025
IS22.05.2025
PT22.05.2025
Former [2025/46]AT22.01.2025
BG22.01.2025
FI22.01.2025
HR22.01.2025
LV22.01.2025
NL22.01.2025
PL22.01.2025
SE22.01.2025
SM22.01.2025
NO22.04.2025
RS22.04.2025
GR23.04.2025
IS22.05.2025
PT22.05.2025
Former [2025/42]AT22.01.2025
BG22.01.2025
FI22.01.2025
HR22.01.2025
LV22.01.2025
NL22.01.2025
PL22.01.2025
SE22.01.2025
NO22.04.2025
RS22.04.2025
GR23.04.2025
IS22.05.2025
PT22.05.2025
Former [2025/35]AT22.01.2025
BG22.01.2025
FI22.01.2025
HR22.01.2025
LV22.01.2025
NL22.01.2025
PL22.01.2025
NO22.04.2025
RS22.04.2025
GR23.04.2025
IS22.05.2025
PT22.05.2025
Former [2025/34]FI22.01.2025
HR22.01.2025
LV22.01.2025
NL22.01.2025
PL22.01.2025
NO22.04.2025
RS22.04.2025
IS22.05.2025
PT22.05.2025
Former [2025/33]FI22.01.2025
NL22.01.2025
PL22.01.2025
RS22.04.2025
Former [2025/30]NL22.01.2025
Cited inInternational search[A] WO2015200743  (DOW GLOBAL TECHNOLOGIES LLC et al.)
 [A] EP2106421  (BOREALIS TECH OY et al.)
 [A] WO2018172510  (BOREALIS AG et al.)
 [A] US2016229964  (BELLEHUMEUR CELINE et al.)
 [A] US2016108185  (WANG XIAOCHAUN et al.)
by applicantUS4599392
 US5272236
 US5278272
 US5582923
 US5733155
 US3645992
 US4076698
 US3914342
 US5854045
 WO2017040127
 US9688795
 US6114486
 WO2015200743
   WILLIAMSWARD, J. POLYM. SCI., POLYM. LET., vol. 6, 1968, pages 621
   KARJALA, TERESA P.SAMMLER, ROBERT L.MANGNUS, MARC A.HAZLITT, LONNIE G.JOHNSON, MARK S.HAGEN, CHARLES M. JR.HUANG, JOE W. L.REICHEK: "Detection of low levels of long-chain branching in polyolefins", ANNUAL TECHNICAL CONFERENCE - SOCIETY OF PLASTICS ENGINEERS, vol. 66, 2008, pages 887 - 891
   S LAIG. W. KNIGHT, ANTEC '93 PROCEEDINGS, INSITE (TM) TECHNOLOGY POLYOLEFINS (ITP)-NEW RULES IN THE STRUCTURE/RHEOLOGY RELATIONSHIP OF ETHYLENE &-01EFIN COPOLYMERS, May 1993 (1993-05-01)
   S. LAI ET AL.: "normalized relaxation time as the result of long chain branching", ANTEC '94, DOW RHEOLOGY INDEX (DRI) FOR INSITE(TM) TECHNOLOGY POLYOLEFINS (ITP): UNIQUE STRUCTURE-PROCESSING RELATIONSHIPS, pages 1814 - 1815
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.