BlackBerry has filed three patent infringement lawsuits in as many weeks. The struggling phone company’s offensive barrage began with a case filed against IP telephony company Avaya on July 27. Last week, BlackBerry filed two lawsuits against budget cell phone maker BLU’s products, alleging that BLU infringes a whopping 15 patents.

The dual lawsuits against BLU suggest that BlackBerry’s new turn toward patent licensing isn’t going to be a one-off event, but rather a more extended campaign. In a May earnings call, BlackBerry CEO John Chen told investors he’s in a “patent licensing mode” and is hoping to monetize his company’s 38,000 patents.