One way to escape the parentheses is to use \Q 
use warnings;
use strict;

while (<DATA>) {
    print if /\QCOPYRIGHT(C)/
}

__DATA__
foo COPYRIGHT(C)
bar COPYRIGHT

[download]

prints: 

foo COPYRIGHT(C)

[download]

See also quotemeta

In reply to Re: regex problem by toolic
in thread regex problem by vishnu.prasad

Title:
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