A man dubbed a "vexatious litigant" by Nova Scotia's highest court has been denied a chance to take his case to the Supreme Court of Canada.

Thomas Percy Tupper launched his legal action after a traffic accident in 1983. It grew over 33 years to include allegations of a vast conspiracy and ended with the declaration that he is a vexatious litigant.

It means the man can't pursue his case any further without the court's permission.

Tupper tried to take the decision by the Nova Scotia Court of Appeal to the Supreme Court. But in a decision released Thursday morning, the court refused to hear the case. As is typical in such matters, the court did not provide reasons for its decision.

Tupper was riding a motorcycle when he struck and injured a pedestrian on June 4, 1983. Tupper was uninsured and riding without a headlight. The pedestrian was drunk and unable to avoid the collision.

A judge decided Tupper was 75 per cent responsible for the collision and awarded the pedestrian more than $28,000. Because Tupper was unable to pay his share, his driver's licence was suspended.

Tupper came to believe he was the victim of a conspiracy that started with the pedestrian and spread to include lawyers and judges who dealt with his case over the years.