(S (S (NP (NP (NP (NP (NP (BASENP (NNP Microsoft)) (COMMA ,) (BASENP (NNP Dell))) (COMMA ,) (BASENP (NNP Hewlett) (NNP Packard))) (COMMA ,) (BASENP (NNP Intel))) (COMMA ,) (BASENP (NNP Apple))) (CC and) (BASENP (NNP Netgear))) (VP (VBP are) (VP (VP (VP (VBG taking) (BASENP (JJ legal) (NN action))) (PP (IN against) (BASENP (DT the) (NNP CSIRO)))) (S (VP (TO to) (VP (VB have) (S (BASENP (PRPD its) (NNP U.S.) (NN patent)) (VP (VBN broken))))))))) (PERIOD .))