well, in 2003, just some of one product's code was copied from Cisco
according to the article below, so this isn't what I was asking about.
I was curious about full 100% clones.
March 25, 2003 (12:08 PM EST)
techweb Huawei Promises To Delete Copied Cisco Code
Huawei Technologies Co. says it will remove from its router software
code copied from competitor Cisco Systems Inc.
Huawei said the tainted code is confined to one module of the software
and won't be in new versions....