Here you can post your opinions, ask questions and share experiences on the PATSTAT product line. Please always indicate the PATSTAT edition (e.g. 2015 Autumn Edition) and the database (e.g. PATSTAT Online, MySQL, MS SQL Server, ...) you are using.
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svacina
- Posts: 1
- Joined: Tue Feb 18, 2014 12:51 pm
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by svacina » Tue Feb 18, 2014 2:01 pm
Hello,
do you think that PATSTAT offers correct expiry dates of patents? I filtered patents with expiry before 9999 and when I compared it with filling date, I got a lot of patents with legal life over 25 years, even over 50 years, e.g. patent with ID 50717985 = 70,2 years
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Does it make any sense to anyone?
Thanks for responses.
Pavel
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nico.rasters
- Posts: 140
- Joined: Wed Jul 08, 2009 5:51 pm
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Contact:
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by nico.rasters » Fri Feb 21, 2014 6:59 pm
I don't have access to TLS221_INPADOC_PRS, so I can not look into this myself.
But have you checked Espacenet? It has a INPADOC legal status link.
Just put
http://worldwide.espacenet.com/ in front of the `appln_nr_epodoc` to go directly to the patent.
Btw, the patent you mentioned is a US patent? It had no legal information in Espacenet.
Maybe in some cases it's counted from the grant of the patent instead of the filing date?
"It is usually expressed in a number of years either starting from the filing date of the patent application or from the date of grant of the patent."
http://en.wikipedia.org/wiki/Term_of_patent________________________________________
Nico Doranov
Data Manager
Daigu Academic Services & Data Stewardship
http://www.daigu.nl/
