NEW YORK — Leonard Feinberg this week became the third former executive of The Leslie Fay Cos. to become affiliated with the Patrick Group, a year-old ready-to-wear and sportswear business here.

Feinberg, who was chairman of the Theo Miles Knit Group unit of Leslie Fay, has become president of Nina Patrick, a new knitwear operation that will operate under the Patrick Group umbrella.

A spokesman for Leslie Fay said Feinberg was offered but rejected another post within the company as part of its continuing restructuring under Chapter 11. The spokesman said Feinberg’s responsibilities at Theo Miles will be handled by “other management within the company.”

Patrick Argenti, founder and owner of the Patrick Group, said Feinberg is a partner with him in the Nina Patrick venture, which opened this week. Feinberg was on a business trip and unavailable for comment, but Argenti said Feinberg’s contract with Leslie Fay had expired at the end of the year, leaving him open to invest in the new venture.

Feinberg was president of the Leslie Fay Outlander division for many years before it was merged into Theo Miles last year.

Argenti is chairman of the Patrick Group, which produces the Patrick Collection of better-priced sportswear and dresses. He is also a partner with Gerald Zipp, former chairman of Leslie Fay Dresses, in a company called Marianna, which they formed in October, also under the Patrick Group umbrella. It sells moderate-to-better-price silk career dresses.