novak-biddle-photoRoger Novak, left, and Jack Biddle are embarking on their first fund in six years.

Bethesda-based Novak Biddle Venture Partners is setting out to raise its sixth fund, said co-founder Jack Biddle, its first such effort since the early-stage venture firm raised $227 million six years ago.

That fund will be accompanied by some big changes at the top. Two general partners, Phil Bronner and Tom Scholl, will take on reduced roles as venture partners in the next fund, according to Biddle. Bronner and Scholl, both tech brains with entrepreneurial backgrounds, were promoted to their current positions when the firm closed its fifth fund in 2006.