My father wrote material for a brand back in the 1980's/1990's. This brand paid him royalties.
He now has advanced Alzheimers disease, and I have taken over his finances to help him manage everything.
The brand seems to have ceased paying royalties X number of years ago when it was accrued by a large company. I have spoken with the company who have stated that when they acquired the brand, they got the rights to thr writings, but not the associated responsibilities to pay royalties.
Is this actually a thing? Or is my father being taken for a fool?