Woodinville, WA-based Ste. Michelle Wine Estates has purchased Patz & Hall, a Napa Valley producer of single-vineyard chardonnay and pinot noir. The terms of the deal were not disclosed, but the sale includes the inventory of  wines and interests in the winemaking facility and in the Sonoma House, Patz & Hall’s visitors’ center in Sonoma.

Patz & Hall’s grapes will continue to be sourced from  vineyards in the Russian River Valley, Carneros and the Sonoma Coast, including  the Hyde Vineyard, Hudson Vineyard, Dutton Ranch, Chenoweth Ranch, Gap’s Crown Vineyard and Alder Springs Vineyard.

Patz & Hall, which has a strong following among the on-premise trade, was founded in 1988  by Donald Patz (national sales director), James Hall (winemaker), Anne Moses (California sales director) and Heather Patz (VIP brand ambassador). All four of the founding partners will remain with the winery to provide expertise and ensure continuity with the winery’s operations.

Ste. Michelle Wine Estates, the third largest premium wine company in the U.S., dates back to 1934, though wines under the Ste. Michelle label were first introduced in 1967. The company has expanded its vineyard holdings to more than 3,700 acres in Washington and California.

Ste. Michelle’s Washington portfolio includes Chateau Ste. Michelle, Columbia Crest, 14 Hands, Northstar, Spring Valley Vineyard, Col Solare, Michelle sparkling wines, Red Diamond, and Snoqualmie. The company also owns Stag’s Leap Wine Cellars (with Italy’s Antinori family), Conn Creek and Villa Mt. Eden in the Napa Valley and Erath, in Dundee, OR.