Wi-Lan Inc., an Ottawa-based licenser of technology patents, said Monday it has acquired a portfolio of patents related to power inversion, which is a technology used for chargers of cellphones, tablets and laptops. The company would not specify what products these patents cover and what actions it would take as a result of this new intellectual property. Wi-Lan has used the courts as a means to secure royalties from companies it claims are infringing on its patents. In October 2012, it launched suits against divisions of Alcatel-Lucent and Ericsson AB in relation to LTE technology, and...