How do kind codes differ between PCT and U.S. national stage applications?
Kind codes for PCT (Patent Cooperation Treaty) applications and U.S. national stage applications differ in their usage and meaning. The MPEP 901.04(a) provides the following information: For PCT applications: “A1” – PCT application published with the international search report “A2” – PCT application published without the international search report “A3” – PCT search report published…
Read MoreWhat are the kind codes for European Patent Office (EPO) publications?
The European Patent Office (EPO) uses specific kind codes for different types of patent publications. According to MPEP 901.04(a): “A1” is used for European patent applications published with the European search report. “A2” is used for European patent applications published without the European search report. “A3” is used for European search reports published separately from…
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