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Extract from the Register of European Patents

EP About this file: EP3642297

EP3642297 - DRILL FLUID AND METHOD FOR TUNNELING [Right-click to bookmark this link]
StatusThe application is deemed to be withdrawn
Status updated on  13.10.2023
Database last updated on 12.10.2024
FormerExamination is in progress
Status updated on  03.02.2023
FormerRequest for examination was made
Status updated on  27.03.2020
FormerThe international publication has been made
Status updated on  31.12.2018
Most recent event   Tooltip13.10.2023Application deemed to be withdrawnpublished on 15.11.2023  [2023/46]
Applicant(s)For all designated states
Canadian Energy Services L.P.
1400, 700 - 4th Avenue SW
Calgary, Alberta T2P 3J4 / CA
[2020/18]
Inventor(s)01 / SMITH, Carl Keith
59 Springbank Crescent SW
Calgary Alberta T3H 3S6 / CA
02 / GAWRYLUK, Josh
Box 1278
Turner Valley Alberta T0L 2A0 / CA
 [2020/21]
Former [2020/18]01 / SMITH, Carl Keith
59 Springbank Crescent SW
Calgary Alberta T3H 3S6 / CA
02 / GAWRYLUK, Josh
201 Windsor Avenue
Turner Valley Alberta T0L 2A0 / CA
Representative(s)Atkinson & Company Intellectual Property Limited
7 Moorgate Road
Rotherham S60 2BF / GB
[2020/18]
Application number, filing date18819655.422.06.2018
[2020/18]
WO2018CA50777
Priority number, dateUS201762524361P23.06.2017         Original published format: US 201762524361 P
[2020/18]
Filing languageEN
Procedural languageEN
PublicationType: A1 Application with search report
No.:WO2018232532
Date:27.12.2018
Language:EN
[2018/52]
Type: A1 Application with search report 
No.:EP3642297
Date:29.04.2020
Language:EN
The application published by WIPO in one of the EPO official languages on 27.12.2018 takes the place of the publication of the European patent application.
[2020/18]
Search report(s)International search report - published on:CA27.12.2018
(Supplementary) European search report - dispatched on:EP11.02.2021
ClassificationIPC:E21B21/00, E21B21/06, E21D9/11, E21D9/13, C09K8/16
[2021/11]
CPC:
C09K8/16 (EP); E21B21/003 (EP); E21D9/04 (EP)
Former IPC [2020/18]C09K8/24, E21B21/00, E21B21/06, E21D9/11, E21D9/13
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 [2020/18]
Extension statesBA23.01.2020
ME23.01.2020
Validation statesKH23.01.2020
MA23.01.2020
MD23.01.2020
TN23.01.2020
TitleGerman:BOHRFLÜSSIGKEIT UND VERFAHREN ZUR TUNNELUNG[2020/18]
English:DRILL FLUID AND METHOD FOR TUNNELING[2020/18]
French:FLUIDE DE FORAGE ET PROCÉDÉ DE TUNNELLISATION[2020/18]
Entry into regional phase23.01.2020National basic fee paid 
23.01.2020Search fee paid 
23.01.2020Designation fee(s) paid 
23.01.2020Examination fee paid 
Examination procedure23.01.2020Examination requested  [2020/18]
01.09.2021Amendment by applicant (claims and/or description)
06.02.2023Despatch of a communication from the examining division (Time limit: M04)
17.06.2023Application deemed to be withdrawn, date of legal effect  [2023/46]
07.07.2023Despatch of communication that the application is deemed to be withdrawn, reason: reply to the communication from the examining division not received in time  [2023/46]
Fees paidRenewal fee
23.01.2020Renewal fee patent year 03
21.06.2021Renewal fee patent year 04
16.06.2022Renewal fee patent year 05
Penalty fee
Additional fee for renewal fee
30.06.202306   M06   Not yet paid
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Documents cited:Search[YA]WO9409250  (SHELL CANADA LTD [CA], et al) [Y] 16 * column 7, line 57 - column 9, line 13 *[A] 1-15;
 [XYI]US2013126243  (SMITH CARL KEITH [CA]) [X] 6-14 * claims * * paragraph [0029] * [Y] 16 [I] 1-5;
 [XYI]US2013206479  (SMITH CARL KEITH [CA]) [X] 6-13 * claims * * paragraph [0055] * [Y] 16 [I] 1-5,14,15
International search[A]CA2802048  (TECH STAR FLUID SYSTEMS INC [CA]) [A] 1-51* (page 3, lines4 - 8; page 4, line 12 -page 5, line 18; page 9, lines 5 - 25; page 12, lines 3 - 8; page 15, lines 9 -16; page 16, lines 3 - 12) *
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.