Yes, It Is Legal To File Several Different Inventive Aspects In One Single Patent Application
I hear the faint-hearted always say: “You have to file one patent application for each inventive concept.”
One thing is sure: you cannot pass a patent attorney qualification exam if you produce a patent application with a multitude of different inventive aspects in that single patent application. That is a standard situation for failing the exam, although it does not represent what we patent attorneys have to do in real life.
Filing one patent application for each one of many inventive concepts that solve the same problem is simply not practical. That would be expensive, it is the version “deep pocket” of patent filing. And there is no applicant with deep pockets in this world. What I know of is that patent department budgets are always too small.
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