That said, this complaint doesn't appear to me to be explicit enough to meet with GitHub's takedown policy (https://help.github.com/articles/dmca-takedown-policy), which requires "Identify the copyrighted work you believe has been infringed. The specificity of your identification may depend on the nature of the work you believe has been infringed, but may include things like a link to a web page or a specific post (as opposed to a link to a general site URL)." But the complaint itself, besides mentioning trademarks and the WhatsApp name, only says "unauthorized use of WhatsApp APIs, software, and/or services". But the existence of code that can use the WhatsApp API is not the same as actually using WhatsApp's services in an unauthorized manner, so I think this is ripe for some pushback.
WhatsApp can easily enough restrict API access to its own clients if it chooses to do so, which is a far better solution than trying to shut down what's apparently an easy library to write.
WhatsApp can easily enough restrict API access to its own clients if it chooses to do so, which is a far better solution than trying to shut down what's apparently an easy library to write.