stake a claim to
stake a claim
To assert one's ownership of or right to something. My great-grandfather staked a claim to this land. You can't have this cookie because someone else already staked a claim to it.
stake a claim to someone or something
Fig. to state or record one's claim on someone or something. (Alludes to marking off an area by pounding in wooden stakes.) she staked a claim to Jeff and told all her rivals to stay away. The prospector staked a claim to the gold-rich area.