Wiznet Numbers On the Chip

Hello! I want to know what the meaning of the numbers on the w5300 is.
What is the difference of w5300 PAT29-010-1221 , w5300 P4FW0-161-0747 and w5300 PP268-010-1818?


Those code is the date code of FAB and package manufacturer.

Thanks for reply! Would you please explain more specifically?