NEW YORK, July 7 (Reuters) - Canadian legal software

maker Dye & Durham's ( DYNDF ) second biggest investor, Plantro

Ltd, has launched a proxy fight to elect new directors and is

pushing for a sale of the company, according to documents seen

by Reuters.

Plantro Ltd, which owns 11% of Dye & Durham ( DYNDF ), told the

company on Monday that it nominated three director candidates to

the 7-person board and that it requisitioned a special meeting

where shareholders would vote on the nominees.