[4] The company was found by a United States court to have infringed on copyright for reproducing the appearance and menu system of Lotus 1-2-3 in its competing spreadsheet program,[5][6] even though they did use different source code.
[7][8][9][10] The loss of this lawsuit was the main cause for the foundering of the company and paved the way for future copyright law on computer software.
[13] Lotus sued Borland over the latter's Quattro Pro spreadsheet[14][15] but, after six years of litigation, lost the lawsuit.
VP-Info was revised and updated and re-published by SubRosa Corporation as the Shark database management application.
[16][circular reference] VP-Expert was the top-selling expert systems development tool, with over 120,000 units sold and site licenses at DuPont, Kodak, and the Wharton School of Business.