I agree, I can say "gotta catch 'em all" and be talking about fish. Is that copyright infrengement?
Also, ghosts and pokemon are totally different things (with a few exceptions, like ghastly, and haunter) so the main concepts are different, so there is no real copyright infrengement.
I'm with cantthinkofaname, Please Lock!!!!!!!!!!!!!!
*gets on knees and starts begging and kissing the nearest mod's feet and rolling in puddles so the mods won't step in them*