The intellectual property office of Taiwan’s Ministry of Economic Affairs is cautioning PC OEMs in the country that a new Apple patent may expose manufactures that produce ultrabooks to patent litigation in the United States.

The patent, seen below, is for the latest refresh of the Macbook Air. Upon cursory inspection of the diagram and description, it very well could be for an Ultrabook or Sleekbook.

“We are recommending that PC vendors be careful,” said Xue Shuhua, a public relations staff member, in a public statement earlier this week. “Companies that manufacture ultrabooks should avoid the Apple patent when producing their products.”

Much like the patent that recently had one of Samsung’s tablets banned in the U.S, the Macbook Air patent in question is broad and somewhat vague but describes the teardrop design employed by ultrabook and sleekbooks.

While the similarities of design, and Apple’s recent tendency to weaponize patents, would be grounds for most PC OEMs to be worried Acer isn’t concerned about an upcoming patentifada by Apple.

“Apple’s patent on the teardrop profile design is different to Acer’s ultrabook design. Hence, currently, the patent has no impact on Acer,” an Acer Spokesperson said in a statement.