In a centennial birthday present to itself, Fox Rothschild has acquired a North Jersey law firm, Roseland-based Goldman and Kramer.

The move gives Fox Rothschild, based in Philadelphia and known for its prominence in the southern part of the state, a more aggressive position up north, firm officials said early this week.

It also means an expansion of the kind of work the firm does for businesses and wealthy individuals.

"Goldman and Kramer have built an impressive practice over the past 25 years, especially in the areas of tax, estate planning and estate administration," said Mark Silow, administrative partner and chief operating officer of Fox Rothschild.

This is just the latest in a spate of mergers that have brought the firm's roster to more than 400 at torneys.