Zimbabwe's High Court Wednesday declared a two-week ban on anti-government protests "invalid," saying it curtailed citizens' rights.
The police, who announced the ban on Thursday, did not have powers to issue laws, Judge Priscilla Chigumba said.
Police had banned protests in the capital, Harare, and the surrounding district for a two-week period, following several violent clashes between police and anti-government protesters in recent weeks.
Dozens of demonstrators demanding electoral reforms were injured, while dozens of others were arrested during the protests.
The southern African country has seen months of protests against alleged human rights abuses and the deterioration of the economy under President Robert Mugabe, who has ruled Zimbabwe since 1980.