"(Hmmm, if there is only one way to prove sameness in many drugs and MNTA has the capabilities, wow, buy as much MNTA as you can Monday and just wait 5 - 10 years!)."
Please look at the host cell line selection patent. It seems like a prerequisite for any FOB company that is wanting to do a biogeneric
Remember the oft-repeated quote from MNTA's management. Host cell line selection will determine structures in the biologic and sameness. So if you have a different cell host line you will never be able to prove sameness. On the other hand if you "choose" cell host line based on certain parameters(to prove sameness) you will likely infringe on MNTA's patent at least for NEXT 20 years-2031(This patent is fresh out of the oven.filed in October 2011)