Header/Footer and isov2 document class

Question

I am currently using the isov2 document class. I would like for a header/footer to be on every page (it varies from even to odd). I am using the current code from the fancyhdr package.

% Header and Footer
\usepackage{fancyhdr}
\pagestyle{fancyplain}
\fancyhead{} % clear all header fields
\fancyhead[LE,RO]{\uppercase{ISO/IEEE 11073-10201:2013(E)}}
\fancyhead[RE]{\tiny{\uppercase{Health informatics --- Point-of-care medical device communication}}} % will need to resize later (NOT to tiny)
\fancyhead[LO]{\uppercase{Part 10201: Domain information model}}
\fancyfoot{} % clear all footer fields
\fancyfoot[LE,RO]{\thepage}
\fancyfoot[LO,RE]{Copyright \textcopyright $\;$ 2013 ISO/IEEE. All rights reserved.}
%\fancyfoot[CO,RE]{To: Dean A. Smith}
\renewcommand{\headrulewidth}{0pt}
\renewcommand{\footrulewidth}{0pt}

However, I've noticed that both the header and footer only appear on pages before the title page. They "disappear" after the first few pages. I have tried removing the options from the document class but that hasn't helped. I have looked through the iso class PDF as well and can't find a solution. A MWE is included below. Thank you.

\documentclass[draft,wd,letterpaper]{isov2}
\let\ifpdf\relax 

% Header and Footer
\usepackage{fancyhdr}
\pagestyle{fancyplain}
\fancyhead{} % clear all header fields
\fancyhead[LE,RO]{\uppercase{ISO/IEEE 11073-10201:2013(E)}}
\fancyhead[RE]{\tiny{\uppercase{Health informatics --- Point-of-care medical device communication}}}
\fancyhead[LO]{\uppercase{Part 10201: Domain information model}}
\fancyfoot{} % clear all footer fields
\fancyfoot[LE,RO]{\thepage}
\fancyfoot[LO,RE]{Copyright \textcopyright $\;$ 2013 ISO/IEEE. All rights reserved.}
%\fancyfoot[CO,RE]{To: Dean A. Smith}
\renewcommand{\headrulewidth}{0pt}
\renewcommand{\footrulewidth}{0pt}


\standard{ISO/IEEE 11073-10201}
\yearofedition{2013}
\languageofedition{(E)}
\setcounter{tocdepth}{3}     % ToC includes ssclauses and above

\usepackage{lipsum}

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

\begin{document}
\clause{Before Title}
Words before Title
\title{Example Document}{}{}

\newpage
\tableofcontents

\clause{Hello}\lipsum
\sclause{Little}\lipsum
\clause{Second}\lipsum

\end{document}

Answer 1

Besides empty, the isov2 class uses three defined page styles: startpage, isotitlehead and headings: the simplest way to activate your headers/footers on every page is to \let those styles (or some of them, depending on which pages you want to keep the standard ones) to be your fancyplain style using

\makeatletter
\let\ps@headings\ps@fancyplain
\let\ps@isotitlehead\ps@fancyplain
\let\ps@startpage\ps@fancyplain
\makeatother

A complete example:

\documentclass[draft,wd,letterpaper]{isov2}
\let\ifpdf\relax 

% Header and Footer
\usepackage{fancyhdr}
\pagestyle{fancyplain}
\fancyhead{} % clear all header fields
\fancyhead[LE,RO]{\uppercase{ISO/IEEE 11073-10201:2013(E)}}
\fancyhead[RE]{\tiny{\uppercase{Health informatics --- Point-of-care medical device communication}}}
\fancyhead[LO]{\uppercase{Part 10201: Domain information model}}
\fancyfoot{} % clear all footer fields
\fancyfoot[LE,RO]{\thepage}
\fancyfoot[LO,RE]{Copyright \textcopyright $\;$ 2013 ISO/IEEE. All rights reserved.}
%\fancyfoot[CO,RE]{To: Dean A. Smith}
\renewcommand{\headrulewidth}{0pt}
\renewcommand{\footrulewidth}{0pt}

\makeatletter
\let\ps@headings\ps@fancyplain
\let\ps@isotitlehead\ps@fancyplain
\let\ps@startpage\ps@fancyplain
\makeatother

\standard{ISO/IEEE 11073-10201}
\yearofedition{2013}
\languageofedition{(E)}
\setcounter{tocdepth}{3}     % ToC includes ssclauses and above

\usepackage{lipsum}

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

\begin{document}
\clause{Before Title}
Words before Title
\title{Example Document}{}{}

\newpage
\tableofcontents

\clause{Hello}\lipsum
\sclause{Little}\lipsum
\clause{Second}\lipsum

\end{document}