The alleged stealing by Chinese firms, including by computer hacking, of technologies patented by Western firms has long been an issue of contention between Brussels, Washington and Beijing as the Chinese economy has grown.
A US study compiled by high-ranking former US officials said in May that theft of software and other US-developed products was costing the American economy more than USD 300 billion each year- as much as the United States sells to Asia.
The agreement was later terminated after Insigma stopped paying royalties, and in 2010 Alstom successfully sued Insignia at the Singapore International Arbitration Court for USD 35 million.
Insigma meanwhile teamed up with Italian firm Idreco and won a contract in 2008 to fit out a Bulgarian power plant- using, according to Alstom, its technology, and beating off a rival offer from... Alstom.
"Our major problem is the recognition that this is our technology," Alstom's marketing director for Europe Guillaume Geoffroy told AFP.