admin-c/tech-c deny responsibility/ownership of netblock

Is there a process to revoke netblocks from entities which deny ownership?

http://www.db.ripe.net/whois?searchtext=77.223.129.43

The admin-c, tech-c deny any responsibility for this netblock.

-Dan

What do you mean: "deny any responsibility"?
I'm not sure I follow exactly, please be more specific?

Have you talked to RIPE?