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International application No. Applicant's or agent's file reference
PCT/EP2020/077471 B16903WO/HLZ
International filing date (day/month/year) (Earliest) Priority Date (day/month/year)
01 October 2020 04 October 2019
FOR FURTHER ACTION: See Form PCT/ISA/220 as well as, where applicable, item 5 below.
This international search report has been prepared by this International Searching Authority and is transmitted to the applicant according to Article 18. A copy is being transmitted to the International Bureau.
It is also accompanied by a copy of each prior art document cited in this report.
1. Basis of the report
a. With regard to the language, the international search was carried out on the basis of:
the international application in the language in which it was filed.
a translation of the international application into                                          which is the language of a translation furnished for the purposes of international search (Rules 12.3(a) and 23.1(b)).
This international search report has been established taking into account the rectification of an obvious mistake authorized by or notified to this Authority under Rule 91 (Rule 43.6bis(a)).
With regard to any nucleotide and/or amino acid sequence disclosed in the international application, the international search was carried out on the basis of a sequence listing:
2. Certain claims were found unsearchable
3. Unity of invention is lacking
4. Title of the invention
The text is approved as submitted by the applicant.
The text has been established by this Authority to read as follows:
5. Abstract
The text is approved as submitted by the applicant.
The text has been established, according to Rule 38.2, by this Authority as it appears in Box No. IV. The applicant may, within one month from the date of mailing of this international search report, submit comments to this Authority.
6. Drawings
The figure of the drawings to be published with the abstract is Figure No.     1    
as suggested by the applicant.
as selected by this Authority, because the applicant failed to suggest a figure.
as selected by this Authority, because this figure better characterizes the invention.
none of the figures is to be published with the abstract.


     C08F 4/651 (2006.01)i; C08F 4/655 (2006.01)i; C08F 210/16 (2006.01)i
According to International Patent Classification (IPC) or to both national classification and IPC


Minimum documentation searched (classification system followed by classification symbols):
Documentation searched other than minimum documentation to the extent that such documents are included in the fields searched:
Electronic data base consulted during the international search (name of data base and, where practicable, search terms used):
EPO-Internal, WPI Data


Category* Citation of document, with indication, where appropriate, of the relevant passages Relevant to claim No.
US 2014148565 A1 (DENKWITZ YVONNE [DE] ET AL) 29 May 2014 (2014-05-29)
paragraph [0061]
claim 12
claim 6
paragraph [0077]
EP 0669347 A1 (MITSUI PETROCHEMICAL IND [JP]) 30 August 1995 (1995-08-30)
Special categories of cited documents:
document defining the general state of the art which is not considered to be of particular relevance
document cited by the applicant in the international application
earlier application or patent but published on or after the international filing date
document which may throw doubts on priority claim(s) or which is cited to establish the publication date of another citation or other special reason (as specified)
document referring to an oral disclosure, use, exhibition or other means
document published prior to the international filing date but later than the priority date claimed
later document published after the international filing date or priority date and not in conflict with the application but cited to understand the principle or theory underlying the invention
document of particular relevance; the claimed invention cannot be considered novel or cannot be considered to involve an inventive step when the document is taken alone
document of particular relevance; the claimed invention cannot be considered to involve an inventive step when the document is combined with one or more other such documents, such combination being obvious to a person skilled in the art
document member of the same patent family


Patent document cited in search report Publication date
Patent family member(s) Publication date
US 2014148565 A1
29 May 2014
BR 112015012107 A2
CN 104918971 A
EP 2922880 A1
EP 3722332 A1
JP 6248120 B2
JP 6705779 B2
JP 2016501934 A
JP 2018009171 A
KR 20150095685 A
MX 363581 B
SG 11201504143T A
TW 201422656 A
US 2014148565 A1
US 2017022305 A1
WO 2014079971 A1
ZA 201503633 B
11 July 2017
16 September 2015
30 September 2015
14 October 2020
13 December 2017
03 June 2020
21 January 2016
18 January 2018
21 August 2015
27 March 2019
29 June 2015
16 June 2014
29 May 2014
26 January 2017
30 May 2014
30 March 2016
EP 0669347 A1
30 August 1995
CA 2142753 A1
DE 69502315 T2
EP 0669347 A1
JP 3472935 B2
JP H07228629 A
KR 950024924 A
US 5731393 A
19 August 1995
05 November 1998
30 August 1995
02 December 2003
29 August 1995
15 September 1995
24 March 1998
Name and mailing address of the ISA/:
European Patent Office
P.B. 5818, Patentlaan 2, 2280 HV Rijswijk,
Telephone No. (+31-70)340-2040
Facsimile No. (+31-70)340-3016
Date of the actual completion of the international search:
24 November 2020
Date of mailing of the international search report:
02 December 2020
Authorized officer:
Thomas, Dominik
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