Even if the Pokémon is knocked out by the attack, Sticky Hold protects the held item.
Generation V onward
If the Pokémon is knocked out by the attack, Sticky Hold does not protect the held item.
Outside of battle
This section is incomplete. Please feel free to edit this section to add missing information and complete it. Reason: In Generation VII, does Sticky Hold only make Pokémon fishing encounters more common, or does it make hooking anything more common?.