The fact that CoreOS have registered a trademark for Tectonic in the US (serial number 86560796 is the relevant trademark on the word mark) is significant and sadly does incline me to thinking renaming the software might be a good idea.
(USPTO trademark search doesn’t really use URLs; it just encodes the transient server state in what passes for a URL, so it expires in a very short time. That’s why your link is dead.)
Incorrect, the name is fine. The name is also a legally registered trademark of a company with a commercial business around said name. I'm unsure of how well you know/understand US Trademark law, but the gist is that you lose a trademark that you don't defend.
This means that the name should be changed voluntarily or CoreOS will be obligated to ask them to change it.
Word Mark TECTONIC
Goods and Services IC 009. US 021 023 026 036 038. G & S: Computer software, namely, software for developing, managing, updating, and maintaining online server instances and clusters hosted by third parties; computer operating system software; computer operating system software for distributed systems. FIRST USE: 20150406. FIRST USE IN COMMERCE: 20150406
IC 038. US 100 101 104. G & S: Providing access to hosted computer operating systems and computer applications through the Internet; Peer-to- peer network computer services, namely, electronic transmission of audio, video and other data and documents among computers. FIRST USE: 20150406. FIRST USE IN COMMERCE: 20150406
Standard Characters Claimed
Mark Drawing Code (4) STANDARD CHARACTER MARK
Serial Number 86560796
Filing Date March 11, 2015
Current Basis 1A
Original Filing Basis 1B
Published for Opposition December 22, 2015
Registration Number 5013800
Registration Date August 2, 2016
Owner (REGISTRANT) CoreOS, Inc. CORPORATION DELAWARE 3043 Mission Stret San Francisco CALIFORNIA 94110
Attorney of Record Brian R. Coleman
Type of Mark TRADEMARK. SERVICE MARK
Register PRINCIPAL
Live/Dead Indicator LIVE
It is a registered "computer software" trademark as well:
http://tmsearch.uspto.gov/bin/showfield?f=doc&state=4805:npp...