ALEXANDRIA, Va., Feb. 26 -- United States Patent no. 12,236,484, issued on Feb. 25, was assigned to Nasdaq Technology AB (Stockholm).

"Order matching" was invented by Hannes Jorgen Edvardson (Uppsala, Sweden).

According to the abstract* released by the U.S. Patent & Trademark Office: "An automated trading system, comprising an interface for receiving a plurality of orders comprising bid orders and ask orders; and a trading module for matching the bid orders and the ask orders, the trading module comprising a memory for storing the plurality of orders; a subset sum module configured to find the subset sums of the bid orders and the subset sums of the ask orders of the plurality of orders; and an order matching module for matching a combina...