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International application No. Applicant's or agent's file reference
PCT/EP2019/083086 02489-WO
International filing date (day/month/year) (Earliest) Priority Date (day/month/year)
29 November 2019 06 December 2018
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. ____________
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.


     C07D 319/12 (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, BIOSIS, CHEM ABS Data, WPI Data


Category* Citation of document, with indication, where appropriate, of the relevant passages Relevant to claim No.
WO 2018095973 A1 (TOPSOE HALDOR AS [DK]) 31 May 2018 (2018-05-31)
claims 1,2,11-18; example 1
US 2013281733 A1 (HAN YU [SA] ET AL) 24 October 2013 (2013-10-24)
paragraphs [0045], [0069], [0070]; claims 1, 2, 10, 11; table 1
WO 02083661 A1 (KUREHA CHEMICAL IND CO LTD [JP]; YAMANE KAZUYUKI [JP] ET AL.) 24 October 2002 (2002-10-24)
claims; examples
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
WO 2018095973 A1
31 May 2018
BR 112019009884 A2
CA 3038234 A1
CN 109963831 A
EP 3544947 A1
JP 2019535773 A
KR 20190088044 A
TW 201823192 A
US 2019284122 A1
WO 2018095973 A1
13 August 2019
31 May 2018
02 July 2019
02 October 2019
12 December 2019
25 July 2019
01 July 2018
19 September 2019
31 May 2018
US 2013281733 A1
24 October 2013
WO 02083661 A1
24 October 2002
AT 277033 T
CA 2440379 A1
CN 1501923 A
DE 60201342 T2
EP 1377566 A1
JP 4394352 B2
JP 5072906 B2
JP 5301390 B2
JP 2004523596 A
JP 2009185065 A
JP 2009269926 A
JP 2013151696 A
KR 20040018351 A
KR 20080105179 A
TW I246511 B
US 2004122240 A1
WO 02083661 A1
15 October 2004
24 October 2002
02 June 2004
17 November 2005
07 January 2004
06 January 2010
14 November 2012
25 September 2013
05 August 2004
20 August 2009
19 November 2009
08 August 2013
03 March 2004
03 December 2008
01 January 2006
24 June 2004
24 October 2002
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:
21 January 2020
Date of mailing of the international search report:
29 January 2020
Authorized officer:
Stroeter, Thomas
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