I always wondered is their a rule against ROH superstars using their ROH names in the WWE (ie Tyler Black, Roderick Strong, Bryan Danielson. I know its his real name just saying etc.)?
ROH don't have a desire, unless it's exceptional circumstances, to trademark names. It's not in the financial interests of the company at any point, especially when profit and staying in a healthy medium has never been more important in the wrestling industry.