Cantilever outdoor sunbrella shades Umbrella design patents, invented when?

http://www.google.com/patents/US6401739

http://www.google.com/patents/US20150068567

http://www.google.com/patents/US9289038

One complaint (Dallas district? Totally smells like patent trolling!)
https://www.pacermonitor.com/public/case/11225480/Lakesouth_Holdings_LLC_v_Kohls_Department_Stores_Inc_et_al

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