File Name: CNpub_for_priority

Observations: 1,080,629 foreign priority claims

Unique Index: app_numfix*for_pri_index

Description: The file lists all foreign priority claims of each patent.

Variables

Variable	Type	Len	Columns in Ascii File	Description
publication_num	Char	20	1-20	Publication number of patent
publication_date	Num	8	21-28	Publication date of patent (month, day, year in ascii file)
app_numfix	Char	12	29-40	Application number in consistent 12-character format
for_pri_num	Num	8	41-48	Total number of foreign priority claims made by patent
for_pri_record	Char	40	49-88	The text record of the given foreign priority claim
for_pri_index	Num	8	89-96	Order that given foreign priority claim is listed on the patent
Country2	Char	2	97-98	Two-letter code for country
for_pri_date	Num	8	99-106	Date of claimed foreign priority (month, day, year in ascii file)
for_pri_rec_trun	Char	40	107-146	The variable the variable for_pri_record above and strips out the date information and country information.
trun_flag	Char	5	147-151	When we originally collected the data, if a patent had more than four or five foreign priority claims, the foreign priority information was truncated to only the first four or five claims. We recollected the foreign priority information, but we were not able to get all of the information for all of the patents. We set trun_flag=’ ‘ for any patent for which there was never any truncation of claims. This is the case for 846,127 out of 854,881 patents with at least one claim (1,035,807 out of 1,080,629 claims) We were able to fix the records for 5,079 parents (34,122 claims). These have trun_flag=’fixed’. We did not fix the records for 2,675 patents (10,700 claims). These have trun_flag=’prob.’ For each of these problem 2,675 problem patents, we have the first four priority claims. The foreign priority information is truncated beyond this.