Morrison & Foerster, Fenwick & West, and White & Case have roles in the Japanese company's purchase of a 51 percent stake in Finnish online game maker Supercell.
The Japanese airline has agreed to purchase 31 passenger jets with a list price of $9.5 billion.
Despite KKR's $1.67 billion acquisition of Panasonic's health care unit last month, many lawyers in the Japanese market say cultural resistance to foreign acquisitions lingers, especially with regard to private equity.
A verdict in the case could serve as a barometer for the rest of the California cases, and for hundreds of personal injury or wrongful death cases across the United States.
In the third major M&A deal out of Japan this week, private equity and investment giant KKR, advised by its longtime lawyers from Simpson Thacher & Bartlett, said Friday it has agreed to acquire Panasonic's health care unit for $1.67 billion.
Japanese building materials giant Lixil Corp. is buying the German bathroom fixtures maker as part of a global expansion drive.
U.S. chipmaker Applied Materials is acquiring Japanese rival Tokyo Electron in one of the largest foreign takeovers of a Japanese company in history.
Nobuaki Kobayashi, who served as trustee in the $5.6 billion bankruptcy of Elpida Memory last year, will join the Tokyo firm on Oct. 1.
GlaxoSmithKline, represented by Allen & Overy, is selling its Lucozade and Ribena nutritional drink brands for $2.1 billion.
The shifting market, a series of departures and leadership changes—in the U.S. as well as Asia—have raised questions about the firm's Asia strategy. But chairman Bradley Butwin insists that O'Melveny's commitment to Asia is as strong as it ever was.