[pbhjpbhj]

>Any patented invention can be used for research pupose!

This is a grey area under the EPC - research is allowed but commercial use is not.

Consider: If the invention is a measuring device used in a particular area of research then that doesn't mean you can rip off the invention and claim it is for research purposes.

Generally I'd say if you built the invention just so you can use it then that's commercial.