Three charged over comments relating to plight of Kachin IDPs who were trapped by fighting in April and May.
Key provision continues to be used to stifle free speech, activists say, with 27 cases filed since the law was changed.
Lawsuits filed in separate cases as courts push back against vocal critics of legal verdicts.
Swe Win's defense lawyer said a judge rejected printouts of photos of a news article about his client after the plaintiff could not prove he took the shots.
Migrant workers who accused a Thai chicken farm of a litany of abuses went on trial for defamation in a landmark case between workers and an employer.
Fake reports of police seizing guns from Yangon academy lead to hunt for identity of four Facebook users.
Ko Khaing Myo Tun receives 18-month sentence for issuing statement on military clash.