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Extract from the Register of European Patents

EP About this file: EP3656054

EP3656054 - MULTISTAGE DOHERTY POWER AMPLIFIER AND TRANSMITTER [Right-click to bookmark this link]
StatusThe application has been refused
Status updated on  06.10.2023
Database last updated on 09.09.2024
FormerExamination is in progress
Status updated on  27.08.2021
FormerRequest for examination was made
Status updated on  24.04.2020
FormerThe international publication has been made
Status updated on  26.01.2019
Most recent event   Tooltip06.10.2023Refusal of applicationpublished on 08.11.2023  [2023/45]
Applicant(s)For all designated states
Telefonaktiebolaget LM Ericsson (publ)
164 83 Stockholm / SE
[2020/22]
Inventor(s)01 / WANG, Zhancang
No. 5 Lize East Street
Chaoyang District
BEIJING 100102 / CN
 [2020/22]
Representative(s)Laqua, Bernd Christian Kurt
Wuesthoff & Wuesthoff
Patentanwälte und Rechtsanwalt PartG mbB
Schweigerstraße 2
81541 München / DE
[N/P]
Former [2020/22]Laqua, Bernd Christian Kurt
Wuesthoff & Wuesthoff
Patentanwälte PartG mbB
Schweigerstraße 2
81541 München / DE
Application number, filing date17918391.821.07.2017
[2020/22]
WO2017CN93777
Filing languageEN
Procedural languageEN
PublicationType: A1 Application with search report
No.:WO2019014909
Date:24.01.2019
Language:EN
[2019/04]
Type: A1 Application with search report 
No.:EP3656054
Date:27.05.2020
Language:EN
The application published by WIPO in one of the EPO official languages on 24.01.2019 takes the place of the publication of the European patent application.
[2020/22]
Search report(s)International search report - published on:CN24.01.2019
(Supplementary) European search report - dispatched on:EP02.02.2021
ClassificationIPC:H03F3/68, H03F1/02, H03F3/24
[2021/09]
CPC:
H03F1/0288 (EP,KR,US); H04B1/0475 (US); H03F3/04 (RU);
H03F3/211 (US); H03F3/245 (EP,KR); H03F3/68 (EP,KR,RU);
H03F2200/451 (US); H04B2001/0408 (US); H04L27/2614 (US);
H04W84/042 (US) (-)
Former IPC [2020/22]H03F3/68
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 [2020/22]
TitleGerman:MEHRSTUFIGER DOHERTY-LEISTUNGSVERSTÄRKER UND SENDER[2020/22]
English:MULTISTAGE DOHERTY POWER AMPLIFIER AND TRANSMITTER[2020/22]
French:AMPLIFICATEUR DE PUISSANCE DOHERTY À ÉTAGES MULTIPLES ET ÉMETTEUR[2020/22]
Entry into regional phase05.11.2019National basic fee paid 
05.11.2019Search fee paid 
05.11.2019Designation fee(s) paid 
05.11.2019Examination fee paid 
Examination procedure05.11.2019Examination requested  [2020/22]
04.08.2021Amendment by applicant (claims and/or description)
30.08.2021Despatch of a communication from the examining division (Time limit: M04)
07.01.2022Reply to a communication from the examining division
08.06.2023Cancellation of oral proceeding that was planned for 14.06.2023
14.06.2023Date of oral proceedings (cancelled)
20.06.2023Despatch of communication that the application is refused, reason: substantive examination [2023/45]
30.06.2023Application refused, date of legal effect [2023/45]
Fees paidRenewal fee
30.01.2020Renewal fee patent year 03
27.07.2020Renewal fee patent year 04
27.07.2021Renewal fee patent year 05
27.07.2022Renewal fee patent year 06
Penalty fee
Additional fee for renewal fee
31.07.202307   M06   Not yet paid
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Responsibility for the accuracy, completeness or quality of the data displayed under the link provided lies entirely with the Unified Patent Court.
Documents cited:Search[A]US2006044060  (SHIIKUMA KAZUMI [JP]) [A] 1-14 * paragraph [0029]; figure 2 *;
 [A]CN101783652  (XIAOLONG GU) [A] 1-14* abstract *;
 [A]EP2608400  (NXP BV [NL]) [A] 1-14 * abstract *;
 [XI]CN102355198B  (UNIV SHENZHEN) [X] 1,2,12,14 * abstract * [I] 3-11,13;
 [A]WO2017036093  (ZTE CORP [CN]) [A] 1-14 * abstract *;
 [A]US9667199  (MCLAREN ROY [US]) [A] 1-14 * column 6, line 64 - column 7, line 12; figure 2 *;
 [XI]  - JINGCHU HE ET AL, "A 500-W high efficiency LDMOS classical three-way Doherty amplifier for base-station applications", 2016 IEEE MTT-S INTERNATIONAL MICROWAVE SYMPOSIUM (IMS), IEEE, (20160522), doi:10.1109/MWSYM.2016.7540133, pages 1 - 4, XP032941157 [X] 1,2,12,14 * abstract * * page 2, column rh, paragraph 2; figure 3 * [I] 3-11,13

DOI:   http://dx.doi.org/10.1109/MWSYM.2016.7540133
International search[A]US2006044060  (SHIIKUMA KAZUMI [JP]) [A] 1-20 * the whole document *;
 [A]CN101783652  (XIAOLONG GU) [A] 1-20* the whole document *;
 [A]US2012025915  (UI NORIHIKO [JP]) [A] 1-20 * description, paragraphs [0030]-[0034], FIG. 5 *
by applicantCN102355198
    - JINGCHU HE, "A 500-W High Efficiency LDMOS Classical Three-way Doherty Amplifier for Base-Station Applications", Transactions on the 2016 IEEE MTT-S International Microwave Symposium, (20160522), doi:10.1109/MWSYM.2016.7540133, pages 1 - 4, XP032941157

DOI:   http://dx.doi.org/10.1109/MWSYM.2016.7540133
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.