Medianna O, Lie G. Reformulation of Annual Patent Fee Payment Regulations as an Effort to Prevent the Loss of Intellectual Property Rights: Reformulasi Pengaturan Pembayaran Biaya Tahunan Paten sebagai Upaya Mencegah Hapusnya Hak Kekayaan Intelektual. acopen [Internet]. 2025 Nov. 19 [cited 2025 Nov. 20];10(2):10.21070/acopen.10.2025.12868. Available from: https://acopen.umsida.ac.id/index.php/acopen/article/view/12868