ALEXANDRIA, Va., May 26 -- United States Patent no. 12,639,765, issued on May 26, was assigned to Chicago Mercantile Exchange Inc. (Chicago).

"Selective suppression of implied contract generation" was invented by Brian M. Wolf (Roselle, Ill.), John F. Curran (Chicago), James W. Farrell (Wheaton, Ill.), Paul J. Callaway (Chicago), Barry Galster (Chicago), Andrew Milne (Maplewood, N.J.), Giuseppe Scimeca (Chicago), Pearce Peck-Walden (Chicago) and James Wilcox (Chicago).

According to the abstract* released by the U.S. Patent & Trademark Office: "An electronic trading system utilizes a Match Engine that receives orders, stores them internally, calculates tradable combinations and advertises the availability of real and implied orders in the ...