The court also ordered a halt to the use of mixed languages - Bengali and English - in the print and electronic media.
The defendants had been asked to implement the order within a month.
As the order has not been carried out within that time limit, the petitioner filed for contempt of court against the defendants on April 6.
The bench on April 29 directed authorities to implement its order on the use of Bengali and report back by May 15. Public administration secretary Kamal Abdul Naser Chowdhury said government offices had been told to implement the court order within 15 days.
