TCS and Wipro Face Patent Suits in US

Two big Indian IT companies, TCS and Wipro, are in trouble in the US.

A company called Calibrate says TCS used its special technology without permission to change software names.

Another company, Mobility, says Wipro used its technology for testing wireless networks without paying.

Both TCS and Wipro are being sued for this.

This is part of a bigger problem where Indian IT companies are moving from simple services to more complex software, which sometimes leads to legal fights.

These lawsuits come at a bad time because both TCS and Wipro are already having a hard time with lower revenues.