Tinjauan yuridis terhadap gugatan pembatalan merek (studi kasus putusan mahkamah agung nomor 854 k/pdt.Sus-hki/2016) = Juridical review toward lawsuit cancellation of brand (case study of the supreme court ruling number 854 k/pdt.Sus-hki/2016) - Arimurni, Ayu Anisa Ica (2018)