Text with first footnotefootnote{label{note1}This is the labeled footnote}
and more text with a second footnotefootnote{here}.

In this a paragraph we have a reference to the first
footnotefootnotemark[ref{note1}].

makeatletter
newcommandfootnoteref[1]{protected@xdef@thefnmark{ref{#1}}@footnotemark}
makeatother

Text with first footnotefootnote{label{note1}This is the labeled footnote}
and more text with a second footnotefootnote{here}.

In this a paragraph we have a reference to the first footnotefootnoteref{note1}.

documentclass{scrartcl}
begin{document}

Company SplishSplashfootnote{This is a registered trade name.
All rights are reserved.label{refnote}}
produces not only SplishPlumpfootref{refnote}
but also SplishPlashfootref{refnote}.

end{document}

documentclass{article}
usepackage{scrextend}
begin{document}

Company SplishSplashfootnote{This is a registered trade name.
All rights are reserved.label{refnote}}
produces not only SplishPlumpfootref{refnote}
but also SplishPlashfootref{refnote}.

end{document}

documentclass{memoir}
begin{document}

Company SplishSplashfootnote{This is a registered trade name.
All rights are reserved.label{refnote}}
produces not only SplishPlumpfootref{refnote}
but also SplishPlashfootref{refnote}.

end{document}

documentclass{article}
usepackage{footmisc}
begin{document}

Company SplishSplashfootnote{This is a registered trade name.
All rights are reserved.label{refnote}}
produces not only SplishPlumpfootref{refnote}
but also SplishPlashfootref{refnote}.

end{document}

Text that has a footnotefootnote{This is the footnote} looks like this.
Later text referring to same footnotefootnotemark[value{footnote}] uses
the other command.

Text that has a footnotefootnote{This is the footnote}
addtocounter{footnote}{-1}addtocounter{Hfootnote}{-1} looks like this.
Later text referring to same footnotefootnotemark uses the other command.

line1 footnote{text bla bla label{xx}}
    line2 textsuperscript{ref{xx}}

documentclass{article}
usepackage[a5paper,paperheight=3.5cm]{geometry}
usepackage{fixfoot}
usepackage[colorlinks]{hyperref}
DeclareFixedFootnote{repnote}{ This is a repated footnote}
begin{document}
Text with first footnoterepnote and more text with a
second normal footnote.footnote{ This is a single footnote}
Now again the first footnote.repnote
newpage
Again the first note repnote  and another  footnotefootnote{
This is a another footnote}, and finally the fixed footnoterepnote.
end{document}

Text with first footnotefootnote{label{note1}This is the labeled footnote}
and more text with a second footnotefootnote{here}.

In this a paragraph we have a reference to the first
footnotetextsuperscript{ref{note1}}.

author{First Authorinst{1} and Second Authorinst{1} and Another Authorinst{2}}

institute{
Some university
and
Some company
}

documentclass{article}

usepackage{authblk}

begin{document}

author[1,2]{First Last}
author[2,3]{Name Surname}
affil[1]{Institute}
affil[2]{University}
affil[3]{Organization}

end{document}

newcommand{footnoteref}[1]{textsuperscript{ref{#1}}}

begin{document}

dummy text with footnotefootnote{Hello worldlabel{note1}}
then more dummy text with same footnote numberfootnoteref{note1}

end{document}