Since you have registered the Domain name in your personal account, you are the owner, administrator of the domain.
Your partner cannot claim ownership by way of minutes of meeting.
For a legal contract especially with reference to ownership of property/intellectual asset, there should be a contract.
So , issue notices to your partner cancelling the minutes of meeting first and then challenge the asset ownership claim made by your partner.
need more facts .. Kindly contact for detailed consultation .. Contact-9654062181.. Adv Hemant