Plans for The Amy Winehouse Foundation have been delayed because someone else has already registered the name.
Mitch Winehouse had planned to set up the charity in memory of his late daughter - who was found dead at her London home last month aged just 27 - to help young addicts, but has had to postpone establishing the organisation after hitting a problem with the registration.
Mitch said: "Somebody else pinched it off of us before we could get it registered.
"All these donations which are coming in - we don't know what to do with them at the moment."
"We'll have to hold off for the time being".
However, Mitch insisted the charity will still be going ahead.
He added to BBC News: "The plan is to help all children - not just rehabilitation, not just substance abuse. It's to help all children in need."
Meanwhile, Amy's ex-husband Blake Fielder-Civil has reportedly told friends he is keen to be involved with the charity as a "roving ambassador".
He is said to have told a pal: "It's what she would have wanted."
However, Mitch and Amy's mother Janis are said to be furious at the thought and have told Blake - who is currently serving a 32-month jail sentence for burglary and is accused of being the person who introduced the singer to heroin - his involvement would be an "insult" to the singer's memory.
A source told the Daily Star newspaper: "Amy's family obviously have other ideas and really don't want to know. In their eyes he is a part of their daughter's life they would rather forget. They accept he was the love of her life but for him to be involved in the charity is crass."
"It would be an insult to her memory."
Thanks for the report to ContactMusic.com.