The first step would be to sue the patent holder. Once the patent has been granted, it's a matter for the courts.
I don't have any examples of defensive suits launched prior to release of an infringing product, but it may occur.
Than main thing is that intellectual property litigation is considered ruinously expensive for all but the largest companies. ...
Using a device under particular circumstances might be unethical. I think it would be huge stretch to consider inventing and patenting a specific mechanism for an electric bike to be unethical.
In any case, the USPTO considers if something is useful, novel and non-obvious. The use of something might be illegal somewhere but a patent does not give one the ...
Patent application is abandoned due to "Failure to Respond to an Office Action". It is expired during the examination process.
You can use the USPTO's public PAIR database(https://portal.uspto.gov/pair/PublicPair) for legal status. If the patent is active then the patent term is 20 years from its own filing 35 U.S. Code § 154 (a)(2)
Almost identical in most cases means that one is an improvement of the other, which is patentable.
Both patent applications you have cited have later been granted (for the difference between application and grant see for example here).
The difference, as you said, seems to be:
entry to the lower chamber being by means of door means, the device further ...
Does that invalidate the patent?
No. Because the filing date of your patent application (and the priority date of any Convention applications in other countries) is earlier than the date you published your paper, there is no issue.
The only downside to doing this is that the public finds out about your invention earlier than they otherwise would. This may ...