What's the adjective for controllership? Here's the word you're looking for.
Included below are past participle and present participle forms for the
verbs control, controul and controull which may be used as adjectives within certain contexts.
“Given the nature of these rights, given their duration, given their exclusive ownership by the controlling party, who may transfer the right, it is clearly a matter of some importance to identify who the controlling party is.”
“A friend of ours who had a very controlling partner used to receive anything up to twenty texts a day at all times of the day and night.”