I'm surprised they can. Seems out of line with the outcome of the chapterhouse lawsuit (based on my incomplete second-hand knowledge 😄) and the lamassu in particular cannot possibly be claimed by any company surely. Or are they just throwing their weight around against smaller companies that won't stand up to them?
To keep it rumour focused... I wonder if this action suggests that they'll be sticking to their WFB theming fairly closely. Wouldn't be much point if they were going to radically reinvent them.