Qld police attacker has sentence reduced

A man who stabbed a police officer and was repeatedly tasered during a violent outburst at a Gold Coast petrol station has had his sentence slashed by two years.

Michael Harley Lappan, 33, is eligible for parole from Tuesday, after the Court of Appeal found his original five-year sentence was "manifestly excessive" because of a judge's miscalculation.

Lappan was charged with three counts of assaulting police after causing a disturbance and resisting arrest at a 7-Eleven at Palm Beach on February 25 last year.

He was tasered repeatedly and, after pulling wires from the taser, produced a short knife.

During a struggle on the ground, he stabbed one police officer in the right buttock and cut another officer on the wrist and bit his hand.

It wasn't until the wounded officer produced his gun that Lappan dropped the knife, although he had to be subdued with capsicum spray.

When he was handcuffed he told police: "I have HIV ... you've all got it now."

The Court of Appeal found the sentencing judge failed to properly consider Lappan's 14 months in pre-sentence custody when sentencing him in April this year.

His sentence was "manifestly excessive" because it effectively amounted to six years and two months' prison, the ruling said.