publn_date, tls209, weight
Posted: Thu May 24, 2018 3:38 pm
Hi everyone,
I am currently working with Patstat Legal Status Version 5.10 (2017 Autumn Edition) and there are a some questions on different topics which have arisen:
1, Does the earliest_publn_date equal the min(publn_date) grouped by the appln_id?
2, Is it possible, that an appln_id is part of multiple txt-files, for example, tls209_part01 and tls209_part02? Or is all information concerning one appln_id always sorted in one txt-file? This question is mostly concerning tls209.
3, How is weight constructed and how it is related to patent scope based on the following code: [COUNT(distinct LEFT(ipc_class_symbol, 4))] ?
Thank you and best regards,
Leo
I am currently working with Patstat Legal Status Version 5.10 (2017 Autumn Edition) and there are a some questions on different topics which have arisen:
1, Does the earliest_publn_date equal the min(publn_date) grouped by the appln_id?
2, Is it possible, that an appln_id is part of multiple txt-files, for example, tls209_part01 and tls209_part02? Or is all information concerning one appln_id always sorted in one txt-file? This question is mostly concerning tls209.
3, How is weight constructed and how it is related to patent scope based on the following code: [COUNT(distinct LEFT(ipc_class_symbol, 4))] ?
Thank you and best regards,
Leo