If it violates the patents, then why did the company not sue Huawei and get a compensation? If it doesn't violate the patents then what's the problem?
The company just can't quit copying.
You can get a whiff of the company culture from this guy.
Also if you Google a bit, you can see that there are similar lawsuits against US companies. For example, a Korean company believes (and had win in courts in some countries) that Apple has stolen their intellectual property: 
Also it is noteworthy how some countries' courts agree that Apple has infringed the patents while other countries' courts disagree.
Theft of trade secrets is a crime.