Here is a slap for BT.. I saw this on another place..
joyetech and other ecig manufacturers win the patent battle over Fontem Ventures
On September 8, 2016, at European Patent Office (EPO) located in Munich, Joyetech GmbH, alongside a few ecig companies, collectively succeeded with patent revocation against EP 2022349 patent held by Fontem Ventures.
Fontem Ventures is a subsidiary of tobacco company Imperial Tobacco, the world's fourth-largest international cigarette company. Dating back to 2013, Imperial Tobacco bought the original e-cigarette patents from Hon Lik, father of the modern e-cigs, this is what Imperial Tobacco is basing its copyright infringement lawsuits on.
The result of this case has a significant influence on the development of the whole e-cigarette industry around the world. Imagine if Fontem Ventures had won, they would charge every user of e-cigarette product for the patent fee. It would be devastating if the traditional tobacco company sells tobacco and also controls e-cigarettes industry.
About EP 2022349 patent:
Patent EP2022349A1 - Aerosol electronic cigrarette
Patent EP2022349B1 - Aerosol electronic cigrarette
So many different battles being fought... It looks like this one has made e-cigs open source..
