In view of the official closing of federal government offices in the Washington, D.C. metropolitan area, including the United States Patent and Trademark Office (USPTO), on Thursday, February 18, due to inclement weather, the USPTO considers Thursday, February 18, a federal holiday.
The USPTO will deem actions or fees due on Thursday, February 18, to be timely if taken or paid no later than 11:59 p.m. ET on Friday, February 19, which was the next business day that the USPTO was open.
Read the full text of the notice on the USPTO’s Patent Related Notices webpage.