Zen-Ruffinen submitted a 30-page document to the Fifa executive committee on Friday.
Blatter predicted that he would retain the presidency of Fifa at a vote in Seoul on 29 May - but paid tribute to his closest challenger, Issa Hayatou of Cameroon.
"I have more friends and fans in the world of football than enemies," he said. "I am convinced that I will win.
"Hayatou is the only one from the so-called opposition who embraced me at the start and end of the meeting. He plays very fairly."
Korea trip
A bad day for Blatter on Saturday saw Fifa vice-president Chung Mong-Joon accuse the president of misusing a forthcoming trip to North Korea to boost his bid for re-election.
Blatter is due to visit North Korea next week in a last-ditch attempt to find a symbolic role for the state at the World Cup.
He hopes to persuade the government to let a delegation of football observers and coaches travel to the finals in South Korea and Japan.
But on Saturday Chung, co-chairman of the South Korean World Cup organising committee, questioned Blatter's real motives for making the trip to North Korean.
Chung said: "The visit to the North should be part of a project for football development but it has strong political overtones aimed at the Fifa presidential election.
"I am not accompanying him because I don't support Mr Blatter and on top of this, I was not consulted."
Chung said that he and Hayatou would stage a rival trip to Pyongyang this month.
New order
Cup report
