Many thanks for your kind answer.
I think I became stupid, because I am not able to finalize.
I followed your path and I found:
<?php
/**
------------------------------------------------------------------------
JA Lawfirm Template
------------------------------------------------------------------------
Copyright (C) 2004-2018 J.O.O.M Solutions Co., Ltd. All Rights Reserved.
@license - Copyrighted Commercial Software
Author: J.O.O.M Solutions Co., Ltd
Websites: http://www.joomlart.com - http://www.joomlancers.com
This file may not be redistributed in whole or significant part.
------------------------------------------------------------------------
/
// no direct access
defined('JEXEC') or die;
?>
<div class="module">
<small><?php echo $lineone; ?> Designed by <a href="http://www.joomlart.com/" title="Visit Joomlart.com!" <?php echo method_exists('T3', 'isHome') && T3::isHome() ? '' : 'rel="nofollow"' ?>>JoomlArt.com</a>.</small>
<small><?php echo JText::( 'MOD_FOOTER_LINE2' ); ?></small>
</div>
With Notepad I modified as follows:
<?php
/**
------------------------------------------------------------------------
EXPERIENCE
------------------------------------------------------------------------
Copyright (C) 2018 EXPERIENCE Brasil. All Rights Reserved.
------------------------------------------------------------------------
*/
// no direct access
defined('JEXEC') or die;
?>
<div class="module">
<small><?php echo $lineone; ?> Designed by <a title="Experience!" <?php echo method_exists('T3', 'isHome') && T3::isHome() ? '' : 'rel="nofollow"' ?>> </a>.</small>
<small><?php echo JText::( 'MOD_FOOTER_LINE2' ); ?></small>
</div>
But nothing happened and the Copyrights stay the same.
Where is my error?
At worst, I prefere to cancel all Copyright in the footer.
I hope you can suport me. Thank you very much.