Peoples are complaining that the products names or page titles which are registered trademarks. They are not shown superscript as the customer wishes them to be. They aren’t able to add <sup> tags in the titles.
You can simply add the following JavaScript snippet that replaces all occurrences of ® with ®.
<script type="text/javascript">
$('body :not(script)').contents().filter(function() {
return this.nodeType === 3;
}).replaceWith(function() {
return this.nodeValue.replace(/[®]/g, '<sup>$&</sup>');
});
</script>
