Home2019 Treaties and Agreements ...Czech Republic (19-516) – Protocol Extending and Amending Agreement for Scientific and Technological Cooperation hide Czech Republic (19-516) – Protocol Extending and Amending Agreement for Scientific and Technological Cooperation TIAS Office of Treaty Affairs Scientific and Technical Cooperation Signed at Prague April 27, 2018; entered into force May 16, 2019. With effect from May 2, 2018. Extension and amendment of agreement signed September 6, 2007: TIAS 08-502. Download Agreement [1 MB] Tags Czech Republic International Law, Treaties, and Agreements Science and Technology