which means to suggest there is bound to be some conflict over the IP claims.
Do you have a working agreement (digital record via emails, stamp paper agreement) on who owns what , as far as the intellectual property and other aspects of your startup is concerned.
If not, then i suggest, you wait for the months to roll by , you can pick this up with your partner at a later stage .
Unless something is signed, you dont have to worry about how your startup evolves , he / she cannot challenge you in court.
Having said that you need to be more forthcoming on details if you want assistance on the topic.