The B.C. Court of Appeal has upheld a constitutional challenge of the law creating a so-called "bubble zone" around abortion clinics.
The ruling tosses out the 10-year battle by anti-abortion activists Donald Spratt and Gordon Watson.
They were appealing their convictions for violating B.C.'s Access to Abortion Services Act by demonstrating inside the 50-metre zone designed to protect clinic patients and staff.
Watson says Thursday's ruling will not deter his fight. He plans to take his case to the Supreme Court of Canada.
"I'll ask them for leave. If not, I'll be appealing to the House of Lords in England," Watson told CTV News.
The unanimous Court of Appeal decision agrees the right to oppose abortion is constitutionally protected, but says limits on that expression are justified in order to protect vulnerable women accessing health care services.
Jill Doctoroff, director of the non-profit Elizabeth Bagshaw Women's Clinic, says she is pleased with the decision.
"This is a legal and medical procedure in an accredited medical facility," said Doctoroff.
"We're pleased women are able to acess service without harassment and staff and nurses and physicians can go to their workplace without being harassed for what they do."
