The case being heard in Munich District Court has been interrupted for two weeks while the judge presiding over the matter recovers from illness.
The law suit was brought against Siemens and Deutsche Telekom by the European branch of technology commercialisation group, QPSX, in April 2001 with financial backing from Lloyds.
QPSX Europe claims the two companies infringed on patents dating back to 1991 over SAR (segmentation and reassembly) technology used in some Asynchronous Transfer Mode (ATM) devices.
QPSX Europe is using the Munich case as a lever to extract licensing fees from other European companies manufacturing or using ATM devices, but its impact has reached Australia.
QPSX's Australian operation last month raised some objections when Ericsson sold its ATM business to Australian company HarTec claiming that the sale involved unauthorised transfers of rights to its intellectual property.
QPSX Australia chief executive officer, Graham Griffiths said that his company was not a party to the sale nor entered any agreement to reassign Ericsson's rights to use its technology to HarTec.
The Munich court is now expected to hand down its decision on the case on 23 October.
