A Guatemalan software engineer is suing Microsoft for allegedly using his technology to link data between the company's Excel and Access programs.
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Carlos Armando said he developed the solution in 1990 and unsuccessfully tried to sell the technology to Microsoft in 1992.
His lawsuit claims his data linking system is based on a single spreadsheet solution to transfer data between Excel and Access.
Microsoft, which denies relying on Armando’s technology, is accused of using his system in various versions of Access without his permission.
Armando said he created the solution while a student at Stanford University. Microsoft claims it was already working on a solution to link data between the two applications three years before being approached by Armando.
The trial is in front of a jury and is expected to last until the end of the month.