USPTO Maintenance Fee Data
This page includes maintenance fee data from the USPTO (https://bulkdata.uspto.gov/data/patent/maintenancefee/).
Below is a link to a folder that includes all maintenance fee events for patents granted from September 1, 1981 through June 26, 2023. This folder includes ten different zip files. For ease of download and ease of importing, files are divided by patent number. File, “maint_fee_non_utility.tsv.zip” includes all non-utility patents. File “maint_fee_5m.tsv.zip” includes all patents issued beginning January 1976 through patent number 5,000,000. File “maint_fee_6m.tsv.zip” includes all patents between patent number 5,000,001 and patent number 6,000,000. Etc, etc. This folder also contains a .txt file (“MaintFeeEventsDesc.txt”) that describes each maintenance event.
Each .tsv file contains the following columns:
Filing date of patent (mm/dd/yyyy)
Issue (grant) date of patent (mm/dd/yyyy)
Maintenance event date of patent (mm/dd/yyyy)
Y=small entity; M=micro entity; N=large entity
If you have any issues downloading the data, find any problems with the data, or have suggestions for how to make the data better/more user friendly, please let me know: firstname.lastname@example.org.
Additional USPTO patent data
Abstract, title data can be found .
Assignee data can be found .
Citations data can be found .
Claims data can be found .
Classifications data can be found .
Examiner data can be found .
General info data can be found .
Inventor data can be found .
Maintenance fee data can be found .
Patent-CRSP permco match data
Patent numbers matched to permco numbers data can be found .