X-categorized citations

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Vaal05
Posts: 2
Joined: Tue Oct 27, 2020 2:54 pm

X-categorized citations

Post by Vaal05 » Tue Oct 27, 2020 4:12 pm

Dear all,

I am working on Patstat Online (Spring 2020 version) and trying to get the count of X-categorized citations in applications of a set of patents. The following code is an attempt to do so for one specific patent with appln_id = 56156. If I understand well, I should find 6 X-categorized citations, same as in the search report of the A1 publication - that can be found here:https://worldwide.espacenet.com/patent/ ... 2143942%22. But the output of my query is quite different: some citations that are not from the search report are categorized while some other from the search report are not.

Code: Select all

SELECT t1.appln_id, t5.publn_nr, t10.publn_nr as cited_publn_nr, t10.publn_auth, t12.citn_categ, t5.publn_claims
FROM tls201_appln t1
JOIN tls211_pat_publn t5 ON t1.appln_id = t5.appln_id
JOIN tls212_citation t6 ON t5.pat_publn_id = t6.pat_publn_id
JOIN tls211_pat_publn t10 ON t6.cited_pat_publn_id = t10.pat_publn_id
JOIN tls201_appln t11 ON t10.appln_id = t11.appln_id
LEFT JOIN tls215_citn_categ t12 ON t6.cited_pat_publn_id = t12.pat_publn_id
WHERE t1.appln_id = 56156
AND t6.cited_pat_publn_id > 0
AND t5.publn_kind = 'A1'
GROUP BY t1.appln_id, t5.publn_nr, t10.publn_nr, t10.publn_auth, t12.citn_categ, t5.publn_claims
What am I doing wrong?

Thanks for helping,
Val


EPO / PATSTAT Support
Posts: 244
Joined: Thu Feb 22, 2007 5:33 pm
Contact:

Re: X-categorized citations

Post by EPO / PATSTAT Support » Wed Oct 28, 2020 11:41 am

Hello Val,
there is a small logical mistake in your query.
The tls215_citn_categ should be joined via 2 attributes in order to link the correct citation category to the citations: t6.pat_publn_id = t12.pat_publn_id and t6.citn_id = t12.citn_id
So observe that the join is NOT via t6.cited_pat_publn_id.
This is a bit of a pitfall because it is contra-intuitive.

Code: Select all

SELECT t1.appln_id, t5.publn_auth+t5.publn_nr, t5.publn_kind,t6.pat_citn_seq_nr,
t10.publn_auth+t10.publn_nr as cited_publn_nr, t12.citn_categ, citn_origin,t5.publn_claims
FROM tls201_appln t1
JOIN tls211_pat_publn t5 ON t1.appln_id = t5.appln_id
JOIN tls212_citation t6 ON t5.pat_publn_id = t6.pat_publn_id
JOIN tls211_pat_publn t10 ON t6.cited_pat_publn_id = t10.pat_publn_id
LEFT JOIN tls215_citn_categ t12 ON t6.pat_publn_id = t12.pat_publn_id and t6.citn_id = t12.citn_id
WHERE t1.appln_id = 56156
AND t6.cited_pat_publn_id > 0
AND t5.publn_kind = 'A1'
GROUP BY t1.appln_id, t5.publn_auth+t5.publn_nr, t10.publn_nr, t5.publn_kind,
t10.publn_auth+t10.publn_nr, t12.citn_categ,citn_origin,t5.publn_claims, t6.pat_citn_seq_nr
order by citn_origin,t6.pat_citn_seq_nr
PATSTAT Support Team
EPO - Vienna
patstat @ epo.org


Vaal05
Posts: 2
Joined: Tue Oct 27, 2020 2:54 pm

Re: X-categorized citations

Post by Vaal05 » Thu Oct 29, 2020 10:08 am

Thank you for your help!

Best,
Val


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