Microsoft vs. Corel: The Slider Design Patent

December 31, 2015

Microsoft recently sued Corel over a variety of items recently. One of those items is the slider shown below.


While most of you are most familiar with CorelDRAW (which has had variations on sliders for many versions), this lawsuit is targeted at Corel Home Office which includes Corel WordPerfect.

The folks at Electronic Frontier Foundation have written about this in an article titled Stupid Patent of the Month: Microsoft’s Design Patent on a Slider. If you want to read the actual legal filing, a link is provided in their article.

Should Microsoft prevail, Federal Circuit Court law would entitle Microsoft to all of Corel’s profits for the entire product even though the slider is only a very small part of the product.

Give the lawsuit a read and then leave a comment on this post (not via e-mail) and share your thoughts on this lawsuit.

Post Discussion


  1. izzy

    Maybe this will give Corel some incentive to reinstitute the Mac platform.

    • Foster D. Coburn III

      I don’t see why it would encourage them to develop on the Mac. They would only do that if sales would justify the investment. As I’ve written numerous times, there just aren’t enough sales to justify the cost.

  2. izzy

    Just a little dark humor. One can only wish.

  3. Brad

    Obviously Microsoft has become a desperate dinosaur.


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Foster D. Coburn III

Foster D. Coburn III built his first Web site in 1995 and he has been working exclusively in WordPress since 2013. He has used the Divi theme exclusively since 2015. Earlier in his career he was the author of 13 best-selling books on CorelDRAW and has been a contributor to numerous technology and graphics-related magazines. Foster has taken many projects, including this Web site, from the early design stage through to a finished piece. He has been a featured speaker at many graphics conferences.

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