Z4 Sues Microsoft Over Windows Vista, Office - InformationWeek

InformationWeek is part of the Informa Tech Division of Informa PLC

This site is operated by a business or businesses owned by Informa PLC and all copyright resides with them.Informa PLC's registered office is 5 Howick Place, London SW1P 1WG. Registered in England and Wales. Number 8860726.

Software // Enterprise Applications
12:54 PM

Z4 Sues Microsoft Over Windows Vista, Office

Fresh off its $142 million court victory, z4 Technologies claims Microsoft still violates patents it holds for technology that blocks attempts to use a single password.

A developer of cyber-security products that last week saw its $142 million patent infringement judgment against Microsoft upheld is suing the company again, claiming that the software maker is still violating its intellectual property rights.

In court papers filed Thursday, z4 Technologies claims Microsoft has made only an "insignificant change" to the product activation technology over which it first sued in 2004.

At issue in the original case was z4 Technologies' claim that Microsoft's Windows XP and Office products violate patents it holds that govern the use of anti-piracy technology designed to block attempts to use a single password to activate multiple copies of a software program.

A jury sided with z4 in that case, and in 2006 awarded the company $115 million in damages. The trial court later hit Microsoft with $27 million in additional penalties. Last week, a federal court rejected Microsoft's appeal of the decision.

In its latest lawsuit, filed in U.S. District Court for Eastern Texas, z4 claims that Microsoft's new Windows Vista and Office 2007 products contain the same infringements.

Z4 is asking the court for triple damages in the new case because it claims the violation is "willful." Microsoft has yet to file a formal response.

In upholding the verdict in the original lawsuit, the U.S. Court of Appeal rejected Microsoft's claim that one of its products, Brazilian Publisher '98, contained so-called prior art that should have invalidated z4 Technology's patents.

Microsoft failed to meet "the burden of demonstrating by clear and convincing evidence" that BP '98 constituted prior art, the court said. The appeals court also nixed Microsoft's argument that the product keys users need to activate its software are not protected by z4's patents.

We welcome your comments on this topic on our social media channels, or [contact us directly] with questions about the site.
Comment  | 
Print  | 
More Insights
InformationWeek Is Getting an Upgrade!

Find out more about our plans to improve the look, functionality, and performance of the InformationWeek site in the coming months.

Pandemic Responses Make Room for More Data Opportunities
Jessica Davis, Senior Editor, Enterprise Apps,  5/4/2021
10 Things Your Artificial Intelligence Initiative Needs to Succeed
Lisa Morgan, Freelance Writer,  4/20/2021
Transformation, Disruption, and Gender Diversity in Tech
Joao-Pierre S. Ruth, Senior Writer,  5/6/2021
White Papers
Register for InformationWeek Newsletters
Current Issue
Planning Your Digital Transformation Roadmap
Download this report to learn about the latest technologies and best practices or ensuring a successful transition from outdated business transformation tactics.
Flash Poll