def METHOD_NAME(ipr):
    """Returns list of messages, as flat strings, to submitters of IPR(s) being
    updated"""
    messages = []
    email_to_iprs = {}
    email_to_name = {}
    for related in ipr.updates:
        name, email = get_pseudo_submitter(related.target)
        email_to_name[email] = name
        if email in email_to_iprs:
            email_to_iprs[email].append(related.target)
        else:
            email_to_iprs[email] = [related.target]
    # TODO: This has not been converted to use mailtrigger. It is complicated.
    # When converting it, it will need something like ipr_submitter_ietfer_or_holder perhaps
    for email in email_to_iprs:
        context = dict(
            to_email=email,
            to_name=email_to_name[email],
            iprs=email_to_iprs[email],
            new_ipr=ipr,
            reply_to=get_reply_to())
        text = render_to_string('ipr/update_submitter_email.txt',context)
        messages.append(text)
    return messages