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"Dead or Alive" identification of patents

Posted: Sat Sep 29, 2018 12:57 pm
by smartrah
Hello PATSTAT users,

I would like to ask what is the preferred way to identify whether a patent is dead or alive (in general)?

I am using the value "PAYMNT" in column "lecg_name" of tls803. If the PAYMNT event is "recent". Then I am assuming the patent is currently active.

But, now it appears that PAYMNT value is not consistent across jurisdictions. For Chinese legal status events, I do not find any PAYMNT legal event. For example this code does not show any Chinese PAYMNT events:

Code: Select all

SELECT lecg_name, lecg_descr, COUNT(distinct event_code) as num 
FROM patstat2018a.tls803_legal_event_code
WHERE event_auth = 'CN'
GROUP BY lecg_name, lecg_descr
ORDER BY num DESC
Would appreciate if someone points me as to how worldwide legal status can be grouped into "Dead" or "Alive".

Thanks!

Rahul Kapoor

Re: "Dead or Alive" identification of patents

Posted: Mon Oct 01, 2018 10:33 am
by smartrah
I have something to add to my post, especially wrt Chinese legal status codes on fee payments.

On this website - http://www.stn-international.com/stn_ne ... news]=2044 I saw the following codes for fee payments:

PAYMENT OF ANNUAL FEE

CNCI01 CORRECTION OF INVENTION PATENT GAZETTE
CNCI02 CORRECTION OF INVENTION PATENT APPLICATION
CNCI03 CORRECTION OF INVENTION PATENT
CNCP01 CHANGE IN THE NAME OR TITLE OF A PATENT

Clearly these do not literally appear to be related to fee payments and PATSTAT marks them as "CORREC" or "CHGOWN". SQL code below:

Code: Select all

SELECT distinct event_code, event_descr, lecg_name FROM patstat2018a.tls803_legal_event_code
WHERE event_auth = 'CN'
AND event_code IN ('CI01', 'CI02', 'CI03', 'CP01')
Can anyone comment if it might be safe to use these codes for fee payments?