Help with SQL query - how to retrieve year & company

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rfuchs
Posts: 1
Joined: Wed Jul 20, 2016 12:32 pm

Help with SQL query - how to retrieve year & company

Post by rfuchs » Wed Jul 20, 2016 6:10 pm

Dear community,

I'm working on a PATSTAT Online (Spring 2016) patent query. My aim is to find all the entries that include the applications made by a certain company, in a certain year (filing date).

The only table where I could find entries related to the companies is the tls206_person > psn_name. I'm not sure if this is correct.

The code I've written can be found below. Here is a brief description of the methodology I used:

Use table tls201_appln to identify the appIn_id of the entries with appIn_filing_year =YYYY
Use table tls206_person to identify the person_id of the entries with psn_name= companyname
Join the two table using tls207_pers_appIn which is the only table in the database that connects an appIn_id to a person_id.


SELECT tls201_appln.*, tls207_pers_appln.*, tls206_person.*
FROM tls201_appln
JOIN tls207_pers_appln
ON tls207_pers_appln.appln_id = tls201_appln.appln_id
JOIN tls206_person
ON tls206_person.person_id = tls207_pers_appln.person_id
WHERE ( tls206_person.psn_name LIKE '%NAMEOFCOMPANY%' ) AND ( tls201_appln.appln_filing_year LIKE 'YEAR' )

Thanks a lot in advance.


mkracker
Posts: 96
Joined: Wed Sep 04, 2013 6:17 am
Location: Vienna

Re: Help with SQL query - how to retrieve year & company

Post by mkracker » Tue Jul 26, 2016 10:42 am

Yes, this looks good.

Nevertheless, here a slightly adapted version:

Code: Select all

SELECT tls201_appln.*, tls207_pers_appln.*, tls206_person.* 
FROM tls201_appln 
JOIN tls207_pers_appln 
	ON tls207_pers_appln.appln_id = tls201_appln.appln_id 
JOIN tls206_person 
	ON tls206_person.person_id = tls207_pers_appln.person_id 
WHERE tls206_person.psn_name LIKE '%SONY%'
AND tls201_appln.appln_filing_year = 2000 
AND tls207_pers_appln.applt_seq_nr > 0
	-- retrieve applicants only, and not persons which are only inventors
  • "APPLICATION_FILING_YEAR LIKE '2000':
    - this attribute is defined as number, so the value 2000 needs not be enclosed in quotes
    - for this comparison you do not need wild cards, so you should use the =-operator instead LIKE
  • I added APPLT_SEQ_NR > 0 to exclude inventors-only.
    Try to run the query with APPLT_SEQ_NR = 0 and you will see what you would retrieve otherwise.
  • I am sure you know that there are multiple name attributes available in TLS206_PERSON. PSN_NAME is a good choice, but you could also experiment with DOC_STD_NAME or HAN_NAME instead.
-------------------------------------------
Martin Kracker / EPO PATSTAT


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