By Martin Finucane Globe Staff

A federal judge has rejected a challenge to the state abortion clinic buffer zone law as it has been applied at clinics in Boston, Worcester, and Springfield.

US District Judge Joseph L. Tauro rejected claims that the law violated abortion protesters’ free speech rights, saying in a ruling issued today that the law “as applied is a valid regulation of the time, place, and manner of Plaintiffs’ speech.”

Attorney General Martha Coakley, whose office defended the law, said, “We are pleased that the court has upheld the Commonwealth’s buffer zone law, which enhances public safety and access to reproductive health care facilities, while preserving freedom of expression.

“The court agreed that the buffer zone leaves open ample opportunities for communication and civil engagement on the public ways outside the facilities,” she said.

The law creates a 35-foot fixed buffer zone around the driveways and entrances of clinics.

The lawsuit was brought by seven residents who regularly engage in anti-abortion counseling outside the three clinics. They filed suit in April 2008, claiming violation of their free speech rights, free association, due process, and equal protection rights.

Tauro split the case into two parts, the first a challenge to the law itself, and the second a challenge to the law as applied.

In August 2008, Tauro ruled on the first challenge, upholding the law itself. The plaintiffs appealed and the First US Circuit Court of Appeals also upheld it. The US Supreme Court declined to take up the case.

Tauro held a bench trial in August 2011 on the challenge to the law as applied and then took the matter under advisement until issuing his 30-page ruling today.