The murder case against Lloyd Rayney will not be appealed to the High Court, but the former prominent Perth barrister still has other legal battles ahead.
Mr Rayney was cleared last November of murdering his estranged wife Corryn Rayney, 44, following a highly publicised three-month trial, dubbed WA's "trial of the decade".
Ms Rayney - a WA Supreme Court registrar - disappeared on August 7, 2007 after her weekly bootscooting class and was found days later buried head-first in a bush grave at Perth's popular Kings Park.
Prosecutors appealed the not guilty verdict, claiming there were errors of law in the judgment by former Northern Territory chief justice Brian Martin, who concluded Ms Rayney was randomly attacked outside her home.
They argued he did not properly consider the circumstantial evidence as a whole, including a dinner place card with Mr Rayney's name on it that was found near the gravesite.
But the WA Court of Appeal dismissed the appeal last month and concluded the trial judge had "carefully and correctly evaluated" all the circumstantial evidence.
NSW Director of Public Prosecutions, Lloyd Babb SC, who was appointed by the WA government to conduct the prosecution case, said on Friday he would not take the appeal further.
"Mr Babb will not seek special leave to appeal to the High Court of Australia from the decision of the Western Australian Court of Appeal in the matter, dismissing the appeal against the acquittal entered by the trial judge," the statement said.
Mr Rayney always maintained his innocence and had the support of his two daughters throughout his six-year ordeal.
He told reporters after the appeal was dismissed that he wanted police to catch the person or people responsible for his estranged wife's death.
But Mr Rayney is still facing charges of bugging his wife's telephone.
He is also suing the state of WA for defamation after police named him as the "prime" and "only" suspect in his wife's disappearance years before he was finally charged.
