Tracey Taundry, the mother of eight-year-old Mylee Billingham who was stabbed to death by her father at his Brownhills home, is calling for the Government to create the new law as she battles to keep her ex-partner away from her two other children.
If passed, the law would automatically remove the parental responsibility of someone if they are convicted of a serious crime.
William Billingham, aged 55, was handed a life sentence of at least 27 years back in October for the murder of his young daughter.
Ms Taundry launched the petition online, which now has almost 2,500 signatures.
She said: “I have three children. My eight-year-old daughter was murdered by my ex-partner. He is serving a life sentence, but he still has legal rights to my other two children, making life extremely difficult.
“Parents should not have to go to court to remove parental responsibility when a partner has committed a serious crime.
"The law needs to be changed so parental responsibility is automatically removed after conviction.”
The petition can be viewed by visiting https://bit.ly/33r7dzb.