Yes, HP will still sue you if you make cartridges for its inkjet printers
Found on The Register on Wednesday, 29 January 2014
The dead-tree-coloring king said on Tuesday that it had closed two separate lawsuits with German firm BestUse, which failed to mount any kind of defense and now must pay HP's legal fees, in addition to disclosing information about its upstream suppliers.
HP's patent attorneys have also scored significant wins in Poland. The printer maker has named six businesses that it says have agreed not to sell patent-infringing cartridges.
Why would anybody buy inkjets at all? Everybody knows that the real ripoffs are the cartridges; and they are always dry or empty when you really need them.