Explanation:

Patent means a government authority or licence conferring a right or title for a set period, especially the sole right to exclude others from making, using, or selling an invention.
Heirloom means a valuable object that has belonged to a family for several generations.
Copyright means the exclusive and assignable legal right, given to the originator for a fixed number of years, to print, publish, perform, film, or record literary, artistic, or musical material