Poking around Google Patents, looks like lots of viruses, including human coronaviruses, are patented. I wonder if the patents are as useless to virologists as software patents are to us software developers...
I wonder if this is the case: the link shows a 320-page patent translated in 3 languages with a tremendous work behind it. It's definitely not patent-trolling.
What makes it more interesting to today's situation is that it was made by people from Institut Pasteur in France which is a reference in the field.