Mary Korby, a longtime partner at Weil, Gotshal & Manges in Dallas, joined K&L Gates’ Dallas office as a partner on January 1.

Korby says she moved to K&L Gates because she had reached Weil Gotshal’s mandatory retirement age and wanted to continue to practice law.

“Their philosophy is: If you don’t push more mature partners out the door, you don’t have room for the younger to come up. I was not at all ready to quit, so I ended up at K&L,” says Korby, a transactional lawyer who chaired Weil Gotshal’s associate compensation committee until August 2012.

Korby says she considered several firms for the next chapter of her practice, but K&L Gates has a “really incredible” network of offices overseas, which fits with her cross-border work.

“It was the international scope and also just the depth of expertise across the various practice areas. There are, what, 2,000-plus attorneys here,” Korby says.

Korby joined K&L Gates’ Dallas office with commercial litigator T. Gregory Jackson, who came from Geary, Porter & Donovan in Dallas.

Jackson says it is a good move for his practice because he has clients that “have needs on a national basis.”

“I see it as a way to expand my practice and be able to retain matters that my clients have on a more national basis,” he says.

Neither Jackson nor Korby would identify clients they brought with them to K&L Gates, which has 46 offices.

Craig Budner, administrative partner in Dallas for K&L Gates, says the firm is thrilled to have Korby and Jackson in its partner ranks. He says Korby adds international transactional expertise, and Jackson has done a lot of oil and gas litigation, which is an area K&L Gates wants to strengthen.

With the two new lawyers, K&L Gates has 91 lawyers in Dallas, he says.

Glenn West, managing partner of Weil Gotshal’s Dallas office, says it was “not a happy day” for the firm when Korby left, but the firm mandates retirement from the firm at the end of the year when a lawyer turns age 68.

“We will miss her, and we will continue to work with her and we are helping her transition over. … She’s a friend and a retired partner of Weil,” West says.

James T. Porter, managing shareholder of Geary Porter, Jackson’s former firm, did not immediately return a telephone message.

This article first appeared on Texas Lawyer’s Tex Parte blog.