In many countries , patent activity in biotechnology has been slowing down over recent years , the study said , with only italy , austria , japan and some countries with very few patent applications showing accelerated activity 研究指出,在許多國家,生物技術(shù)專利表現(xiàn)出明顯慢化,只有意大利,澳大利亞,日本和其它一些國家的少數(shù)專利表現(xiàn)出加速發(fā)展。