I believe that we should issue something much simpler than patents: file a very brief description of your invention which is stamped by a trusted agency. It is only evaluated in the case of conflict. That is, if you think I am infringing, you bring it to court, present your originality paper (which dates your idea) and then you have to prove that it is not obvious and that it is useful.

This procedure puts the burden on the claimant, not on some random guy who happens to figure out an idea. It also does not require much work until there is an actual conflict.