Well. in Aparsai's case this does not apply, because, if you look at the first line of the code that was infringed upon, ( and all MT4 code for that matter, because the copy right is boiler plated into the code) It shows a clear and legal copyright with a date of copyright. and the name of the copyright. So this is indeed covered under US and international copyright law.
Source: United States Copyright Office
Your information is not correct under US law
How to Secure a Copyright
Copyright Secured Automatically upon Creation
The way in which copyright protection is secured is frequently misunderstood. No publication or registration or other action in the Copyright Office is required to secure copyright. (See following note.) There are, however, certain definite advantages to registration. See “Copyright Registration.” Copyright is secured automatically when the work is created, and a work is “created” when it is fixed in a copy or phonorecord for the first time. “Copies” are material objects from which a work can be read or visually perceived either directly or with the aid of a machine or device, such as books, manuscripts, sheet music, film, videotape, or microfilm. “Phonorecords” are material objects embodying fixations of sounds (excluding, by statutory definition, motion picture soundtracks), such as cassette tapes, CDs, or LPs. Thus, for example, a song (the “work”) can be fixed in sheet music (“copies”) or in phonograph disks (“phonorecords”), or both. If a work is prepared over a period of time, the part of the work that is fixed on a particular date constitutes the created work as of that date.
http://www.copyright.gov/circs/circ1.html#hsc
Source: United States Copyright Office
Your information is not correct under US law
How to Secure a Copyright
Copyright Secured Automatically upon Creation
The way in which copyright protection is secured is frequently misunderstood. No publication or registration or other action in the Copyright Office is required to secure copyright. (See following note.) There are, however, certain definite advantages to registration. See “Copyright Registration.” Copyright is secured automatically when the work is created, and a work is “created” when it is fixed in a copy or phonorecord for the first time. “Copies” are material objects from which a work can be read or visually perceived either directly or with the aid of a machine or device, such as books, manuscripts, sheet music, film, videotape, or microfilm. “Phonorecords” are material objects embodying fixations of sounds (excluding, by statutory definition, motion picture soundtracks), such as cassette tapes, CDs, or LPs. Thus, for example, a song (the “work”) can be fixed in sheet music (“copies”) or in phonograph disks (“phonorecords”), or both. If a work is prepared over a period of time, the part of the work that is fixed on a particular date constitutes the created work as of that date.
http://www.copyright.gov/circs/circ1.html#hsc
DislikedWrong !
Under US copyright laws, once you publish or post something offline or online (like a forex trading system in this case), it automatically becomes "public domain" and you no longer have any copyright privilege.
In other words your work or system now belongs to everybody.
The only way to copyright something, at least in the US, is to actually send it to the Patent, Trademark and Copyright bureau located in Washington, DC and wait for your confirmation letter. Then, and only then, you are legally protected.Ignored