China handled more patent applications for inventions than any other country for the fifth year running in 2015. The country had over 1.1 million patent applications last year, up 18.7 percent year on year. About 359,000 invention patents were authorized, 263,000 of which were granted to domestic applicants, 100,000 more than in 2014. That brought the number of invention patents owned by every 100,000 Chinese to 6.3. Of all the invention patents authorized in 2015, 60.5 percent went to Chinese enterprises, an annual increase of 4.1 percentage points. China's top oil-refiner Sinopec obtained 2,844 patents, the most among all Chinese firms, followed by telecom giants ZTE and Huawei. In addition statistics reveal that from January to November 2015, IP organs across the country handled nearly 4,000 patent infringement and counterfeiting cases in Ecommerce area during the Lightening Action carried out by State Intellectual Property Office of China. In the 2011-2015 period, the SIPO has dealt with a total of about 87,000 cases of IPR infringement.