"Dead or Alive" identification of patents
Posted: Sat Sep 29, 2018 12:57 pm
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:
Would appreciate if someone points me as to how worldwide legal status can be grouped into "Dead" or "Alive".
Thanks!
Rahul Kapoor
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
Thanks!
Rahul Kapoor