Ok is the opposite of Sick. Sick is the opposite of Normal. Normal is a synonym of Square. 
Patent is a type of Register. you are likely to find Name in/at/on Register. Name is related to Rabbit. Rabbit is related to Old. 
Ok <--Antonym--> Sick <--Antonym--> Normal <--Synonym--> Square 
Patent --IsA--> Register <--AtLocation-- Name <--RelatedTo--> Rabbit <--RelatedTo--> Old 