The US billionaire is suing retailer The Little Homie for knowingly infringing on his trademarks and misleading conduct, including selling the book "AB to Jay-Z".
The conduct is "flagrant, glaring and contumelious", court documents filed in the Federal Court of Victoria last week show.
The online retailer raised $8000 on Kickstarter to publish a picture book called "AB to Jay-Z", which refers to well-known rap musicians to teach the alphabet.
