Doctor of Law Edisher Putkaradze, Professor of Guram Tavartkiladze Tbilisi Teaching University, was on a research internship at Humboldt University at the invitation of Professor Martin Heger. His research topic was "Criminal Law Policy."

Professor Edisher Putkaradze formed commercial relationships with colleagues from England, Italy, Greece, Japan, Brazil, and Argentina during his time at Humboldt University.