Not able to be protected by a patent because it's too common, not helpful, or too obvious.
The simple gadget was considered unpatentable because it was too easy to think of.
這個簡單的小裝置被認為是不可申請專利的,因為它太容易想到。
Not able to get a patent because it doesn't follow the rules for what can be patented.
Their idea was unpatentable, so they couldn't get legal protection for it.
他們的想法是不可申請專利的,所以他們不能獲得法律保護。