"opposed on public policy grounds, i.e. negative effects software patents and increased cost of litigation (and maybe that should've been done during the negotiations on the treaty)."
Problem is that the Court Fees were decided after the treaty has been signed, by this administrative committee.
And they are defeating the purpose of "making the whole system cheaper", as it would raise the cost of litigation for a simple case.
We warned about this problem long ago, with the predecessor of the UPCA, the EPLA:
"A litigation case before the EPLA court will at least be twice as expensive as litigation before the national courts of Germany, France or the Netherlands."
Stjerna's analysis of the cost situation is roughtly the same, a 3 fold increase for a simple case: