That is much different than "buying patents". They bought an EPA sub-registration so they can claim their product kills certain pathogens. Getting new EPA registrations can cost 500k and up. It was a strategic business decision.
I looked and you have been in IEVM since 2014? In fact these are only 2 stocks you have posted on. Explained a lot seeing that MSU has been there a long time as well. Still time to grab some shares here!