It looks like XYZ printing are trying to cause trouble for Creality at the minute.
Naomi Wu has put up a tweet about them filing a patent complaint against the Ender 3 with Amazon.
https://twitter.com/RealSexyCyborg/status/1016509621941387264
According to her they were very annoyed(pissed off) with her efforts to promote open soursce.
(https://pbs.twimg.com/media/Dhtd-fOU8AAlhQD.jpg)
Based on a U.S patent, allegedly this one
(https://pbs.twimg.com/media/Dhtd_ZrU8AAgDi2.jpg)
Now this doesn't look like anything the Ender 3 could be infringing, not to me at least, and I've found and had a good look at the original patent.
I'm going to link it here.
Documentation:
http://pdfpiw.uspto.gov/.piw?docid=09987802&PageNum=1&&IDKey=6379072AEFBA&HomeUrl=http://patft.uspto.gov/netacgi/nph-Parser?Sect1=PTO1%2526Sect2=HITOFF%2526d=PALL%2526p=1%2526u=%25252Fnetahtml%25252FPTO%25252Fsrchnum.htm%2526r=1%2526f=G%2526l=50%2526s1=9987802.PN.%2526OS=PN/9987802%2526RS=PN/9987802
and
Web description.
United States Patent: 9987802 (http://patft.uspto.gov/netacgi/nph-Parser?Sect1=PTO1&Sect2=HITOFF&d=PALL&p=1&u=%2Fnetahtml%2FPTO%2Fsrchnum.htm&r=1&f=G&l=50&s1=9987802.PN.&OS=PN/9987802&RS=PN/9987802)
It should also be noted that there is also a fairly interesting thread about their software on GitHub in the Slic3r repo.
GPL violation? XYZware · Issue #4103 · slic3r/Slic3r · GitHub (https://github.com/slic3r/Slic3r/issues/4103)
Here is a video about this situation.
https://youtu.be/wMvDxx1-clo
XYZ have released a statement which can be found here.
Twitter (https://twitter.com/XYZprinting/status/1018056345382088704?s=19)
They deny that they made the infringment claim and state that they are making enquiries as to who has made the claims. I suggest you read the statement for clarity on XYZs position.