For example.

in PDF it's The but when i copy to notepad it paste the . how to copy text with same case

for example: ("the" is just for example)

This is PDF

The Superman xxxxxxx xxxxxx xxxxxx xxxxxxxx xxxxxx x xxxx xx
xxxx xxxx xxxxxxxxxxx x to you x x xxxxxxxxxxxxxx xxxx xxx
xxxx xxxxxx
The xxxxxx xxxxxxx xxxxxx xxxxxx xxxxxxxx xxxxxx x xxxx xx
xxxx xxxx xxxxxxxxxxx x xxxxxxxx x x xxxxxxxxxxxxxx xxxx xxx
xxxx xxxxxx

This is pasted text (see " of second paragrapht")

The Superman xxxxxxx xxxxxx xxxxxx xxxxxxxx xxxxxx x xxxx xx
xxxx xxxx xxxxxxxxxxx x to you x x xxxxxxxxxxxxxx xxxx xxx
xxxx xxxxxx
the xxxxxx xxxxxxx xxxxxx xxxxxx xxxxxxxx xxxxxx x xxxx xx
xxxx xxxx xxxxxxxxxxx x xxxxxxxx x x xxxxxxxxxxxxxx xxxx xxx
xxxx xxxxxx