CPC Revision
Posted: Thu Nov 16, 2017 7:05 pm
Hi,
Once a CPC code has been revised - how the change is handled by patent offices?
For example in August 2017, CPC code C01B31/02 has been changed to C01B32/05. Now if I search by the old code (C01B31/02), will I get no result at all? If I search by new code (C01B32/05), will I get all patents classified under old code?
Thanks,
Shahzeb
Once a CPC code has been revised - how the change is handled by patent offices?
For example in August 2017, CPC code C01B31/02 has been changed to C01B32/05. Now if I search by the old code (C01B31/02), will I get no result at all? If I search by new code (C01B32/05), will I get all patents classified under old code?
Thanks,
Shahzeb