After expert evaluation, the primary layout of China's homemade C919 passenger jet turned to the specific design phase. "C919 has made breakthroughs in 40 key technologies and resolved 100 technical problems. Since its establishment, China Commercial Aircraft Corporation (CCAC) has cumulatively filed 170 Chinese and foreign patent applications, 40 of which were granted", according to CCAC VP and C919 general designer Wu Guanghui.

While 83% of patent applications on general structural design are from Europe and the U.S., and relevant technology transfers are restrictively controlled by them, CCAC's seemingly singled-minded DIY ekes out valuable  IPR-laden technologies for large-sized aircraft.

(China IP News)