The Channel logo


By | John Oates 18th May 2005 09:55

Microsoft sued over Excel

Guatemalan inventor claims $500m

A Guatemalan inventor claims Microsoft is illegally using his software to transfer information between its spreadsheet products Excel and Access. Carlos Armando Amado says he filed a patent in 1990 for software which lets users move data between Excel to Access via a spreadsheet. He tried to sell it to Microsoft two years later, according to Reuters.

Amado claims Microsoft starting using his technology in Access releases from 1995 to 2002. Microsoft deny this saying they started working on the technology in 1989 - three years before Amado came to see them.

The suit does not claim specific damages but lawyers told Reuters they would be asking for about $2 for every copy of the software sold, which equates to $500m. The case is being heard in the US District Court of Central California

Microsoft is also facing patent claims over Longhorn, the next version of Windows, from networking company Alacritech. It is also being sued by Forgent Networks which claims the software giant broke its JPEG picture compression patents. ®

Related stories

Forgent sues Microsoft over JPEG patents
Patent injunction knocks Longhorn
MS antitrust: IBM, Nokia, Oracle enter the fray

alert Send corrections


Frank Jennings

What do you do? Use manual typwriters or live in a Scottish croft? Our man advises
A rusty petrol pump at an abandoned gas station. Pic by Silvia B. Jakiello via shutterstock

Trevor Pott

Among other things, Active Directory needs an overhaul
Baby looks taken aback/shocked/affronted. Photo by Shutterstock

Kat Hall

Plans for 2 million FTTP connections in next four years 'not enough'
Microsoft CEO Satya Nadella


League of gentlemen poster - Tubbs and Edward at the local shop. Copyright BBC
One reselling man tells his tale of woe