Dear Martin and Nico, Thank you very much for your insights. Martin was correct. Once I inserted the command "nb_applicants>0", Patstat ran the code without any problems. As per the side remark, he was once again correct. It is meaningless to GROUP BY appln_id. I truly appreciate both of y...

Dear all, I would like to ask for your help with an error message I`m getting on PATSTAT Online. I`m trying to generate a list of number of patent applications per country of origin of the applicant and year. In the case of more than one applicant, I divide the (1) application by the total number of...