COPPA, CLIR and TAPTA: three tools to assist in overcoming the Patent language barrier at WIPO Bruno Pouliquen author 2011-sep 19-23 text Proceedings of Machine Translation Summit XIII: Plenaries Xiamen, China conference publication pouliquen-2011-coppa https://aclanthology.org/2011.mtsummit-plenaries.5/ 2011-sep 19-23