Following our representations, IPOS has confirmed the new format for application numbers of registrable IP (e.g., trade marks, patents, registered designs) filed on or after 14 February 2014.
The new application number format will not use alphabetic identifiers, but rather numeric identifiers.
This is the first time that IPOS has released details of the algorithm they use to calculate the check digit. They did so on our representations that the widespread availability of the algorithm is in the public interest.
Application Number Format
IPOS has confirmed that the format for application numbers will be in the form
AA is the type of IP
YYYY is a four digit year
NNNNN is a five digit serial number, padded with 0s, which is reset to 00000 every year
C is a check digit (P, Q, R, S, T, U, V, W, X or Y)
DD appears to be a two digit extension (serial number, padded with 0s) to indicate a trade mark divisional application
IP Type Code
10 for domestic patent applications
11 for national phase patent applications
30 for registered design applications
40 for trade mark applications
Note for the curious and observant: is the IP type code “20” being reserved for some other type of registrable IP, and if so, what? Utility models would be my first guess…
The check digit is calculated using the Damm algorithm:
102013000005P - patent application, filed as a domestic patent application
40201300054R-01 - trade mark divisional application
Current Application Number Format
The algorithm for calculating the check digit for the current application number format (YYYYNNNNN-C) has (to our knowledge) not been made publicly available, but it is not difficult to reverse engineer.Back to Singapore Patent Blog