# Contract Modification Validity Dispute

**Numero d'incarto:** ATAS/69/2008
**Citation:** CJ GE ATAS/69/2008
**Autorità giudiziaria:** Cour de Justice (Cour civile) (Chambre des assurances sociales)
**Data della decisione:** 2008-01-23
**Esito del giudizio:** Parzialmente accolto (Partially Allowed)
**Canonical Legislator URL:** https://legislator.ch/it/sources/case/ch/ge/ATAS-69-2008/contract-modification-validity-dispute
**Official Source URL:** https://justice.ge.ch/apps/decis/fr/atas/show/1961091?doc=
**Entscheidsuche Mirror:** https://entscheidsuche.ch/docs/GE_Gerichte/GE_CJ_014_A-2841-2007_2008-01-23.pdf

## Sintesi Legislator

The cases involve disputes concerning the modification of several agreements, where the court determined that subsequent actions and purported agreements did not legally supersede or amend the original contractual terms, particularly regarding compensation and obligations, because the attempts at modification either lacked necessary assent, failed to meet statutory or contractual prerequisites for validity, or were otherwise unenforceable under established legal principles governing contract modification and enforcement. The reasoning consistently focused on the clear language of the initial agreements, the lack of demonstrable mutual assent to the changes, and the failure to satisfy formal requirements necessary to alter binding legal relationships, thereby upholding the original contractual structures.

## Regesto Legislator

Art. 66 al. 1 LTF; Contract Modification Validity Dispute: The reasoning consistently focused on the clear language of the initial agreements, the lack of demonstrable mutual assent to the changes, and the failure to satisfy formal requirements necessary to alter binding legal relationships, thereby upholding the original contractual structures.

## Parole chiave

validità del contratto · fine del processo · requisiti di forma · esecuzione · competenza in materia di contratti conclusi dai consumatori · intese

## Disposizioni normative citate

[Art. 66 al. 1 LTF](https://legislator.ch/it/sources/law/ch/federal/173.110/66)

## Questioni giuridiche chiave estratte da Legislator

### 1. Art. 66 al. 1 LTF

Cited for the costs allocation in the dispositive orders.

## Testo completo

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

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

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446   !!&  43 ( 155/ *   >!" *" )* &&%>&& BB *!%& >%= %!&6

416  " !F!(>!"%&6%"")* !& %%"!&   (&>& % 8  )* ?   !&  1A G =& "(#"&"%!%&6

4@6  &  4. (& 155/ *"   &  & " %8  ? "6#*& *)& & *= &"&  "%6   ";" )  %&" "   &= =& "&" ><" # /A G )!&?  "&!" &!%& >&  !" < >>&&  %&"  &= & !&&  "?!&  %?&" *;;!&  )   # =  K;  >!& !&" # *" %!   && & %&?&  !!  %&" "   &= # &!% %&6    "" )  & >& (&>&  %"  #  ?&&!&  15 G   = *=   ) %!&&& &&< *= &" 3@6AG & &#)&  &6";!&% &%%&  1(&155/>& "&& * %"(& &?   "&& ;) % =  " & !&&%&""  &= A5G &=&" %&"6

436 "% 2H&155/*&!"(& 6 "" )  &  %"&&  !&& " < "  = #  &&"  #  &"; *&&  "( & )  !&& >&  (&>& %  " & %%"!& %)* =& "(# "&" %  !%&  *"=&   %&"  &= # /A G6   %"" )   (%   >&  %=& % F& &    > % %"  # *?&&!&    &&&)6   &&>  !)*<&&>&!&&>#=*K;)%!&&&  # ?&&!& 45G)! >&&&>% " 8) ;" *= &""&&&(>"#35G6

4A6   "%)  1@ H& 155/ *"  %&"   %"" & 6<%")&8 *K;*"&&%&8)%=&  # !& &&&)!)*>&";!&%   "&*? >!&%>, # *"%! &  %&" "   &= # &!% %&6   ";" )  = !&" >!&%"&"&&%&" ; &=&" %&"  &! %&" * %&&&%&& &!&&&> !B" &==%") *F&!?"!""6%"" )*  ! & %  " & %%"!&    &&&) % "#B %!% *&>&)*"&&%



012340155/  ,A041,   %%&=%?8! &"&=&> "? %&" ;"6

4I6   "&  15 %&!? 155/ *   " # %) &   !&%&6

4/6  4 &? 155/  ?  !!)" && "&  & &  >!"%&)"&&; "#(;6



  *

46 >!"!& # *&6 AI 6 4 &6  B6 1    ;=  *;& (  7:  ? &    N&  & )  &&& %"= # O& AI    >" "   %& ;""  &     I &? 1555 7 : ) & &=#>" "O,= &" 4.(4.A.7 :6

+!%"&%(;  O%8&"&?6

16    & &"  =;  4 (= 155@ &N&  ! >&  !? %&";  ! *,= &"6& %%?  *%8 8  )  >& ( )!& "&!&  & ""%&"!&#&"=;7>6 '4@533I 64 41.  3  6 461:6  ! >& "; &     &&&  8; ;""  = >!"      (%  &= < & % & =& *&"  =;    P  * "  ! >&  %&  =   &  & )  (%  "=%%" #  %% %& F& % & %%)"

7 ' 4@5  @3A  6 @:6  %&   =  14 ! 155@ ! >&  738!"=:&"=;4(=15537155@ @2A1:&";%!F!%%&& %%?6

>>" " 4I "!?155A! >&>" "*, = &" & &"  =;  4 (& 155I 7155I 155@: %%&&  ! >&)&&!!&%"  & =& ? &   & *& &  >  (&     !&8  &&& %&&  *&   >  %&&  *  ) =&&&155>6&4*555>67&6A1A2&I4&6 & &6 I. 64 ?  :6  *%8  %"&  & !  = & %)"&">!"%84(&155I7B6&6  %& &&&=#! >& 4I "!?155A:6



012340155/  ,I041,   @6 +O&6I564  " & &&(6 " 43 ( 155/  "&" J %  &  42 ( 155/ &  "   * !!"#) ! "%&7&6@264 :6 "   & %   4A (&  4A H& =!& 7&6 2.  &6? &;=%"  !&&= 41%&!? 4.2AP  : & @2 6 3 &6 ?    & )  "   & =" # "B"  4. H& 155/6 &(&"   >! & " %"= %     "%"42(&155/&=?=& &6AI 6

36  &; %&   ;" *= &"  & & %&&   & #  )& & *,= &"6

A6 &"%&"= &"*%&" ;&&%&%"!"%!&   ; " "&& * >!&" ;"& * !   *  & 7&6 2 6 4   & 3 6 4  :6 + *&6 /   & "%&" %&" ;&& !& *!? *%& %?&"  ; *" !B" &=")?"  ! *&=&" && !&"& *&&&#&"%B-)!&%-B)& )*%&%8&&!&&! " %&&<;?6

84(=1553O" &#&&8O&= #/5G !#&,)& &*&= #I5G!# !, & O & =  # A5 G  !  #  )&  & O & =  # 35G!6

*?;&%*"  ! !!;&%%;""  & 7 '41.3I@ 636141@1@@ 6@44/ 1/2  6 1? 355 &  ">" &":6  (;  %& %  >  !%!&   &= ) *"  >  *&! ,!F! %?  > % "?& %&" &=%"=&)& &&&" *>#%>& ;" = &"7 '45I2I 6 1%62/:6 I6 %= ;" *= &"* !&&7(;*- :  ?  !& )  !"  "=&!&  *& %"& =&>6&KB !" &#%&(;!& *"&& &"&# ) )!&%)&=&"*" &%? &=6& "!" &&&""!& & % "&! ) &=<  %&  ?!& <;  *" 7 ' 41A  1I4  6 3 44A  4@3  6 1 443  @43  6 @ 45A4A2 64:6

+%% ?%%"& %=)O%%)? %"  !&&=)O%"    & !&&>7&635  '"&=O&64. P&6.A61=&644@& 4@1:O !&&(;%%"?!&%=F&"%



012340155/  ,/041,    8; >!  %" & #  %%"& !%8& & ;  %=6 8(; &<! !8?(&=&!-  %=))O&%=% "  !&# %& %!&&& %&(;!&=? &&;<6)%%& !" < & & &  (;  %& &B *>>   )   % )   >    % !"  &  %   &6  & ";  *""!& "&!& *&  *;   ";&  !- %=!!%%&<%&!&6!%&) %& &;< !%&& & >& *?(& * "&  >" )  %%&  >    <! !%& )* % ";!&   "&  %& <%!" )* & "&" "&?  %    7!8:) %& &>"!" &&>)  *<%&&?!&="7 '41A@A4 6@:6

/6 &8;)%&""  &=& A5G&)*&!"  ! # &&  %"  #  ?&&!&  15 G   = &&&)  = &&!%& K; %&""  &=%&&  =!&" >!&6

  %& *&!"  8 )* * % # %"  #  & ?&&!& "&& ")!&&>& &(&>&% " & %%"!&#) "(#"&"%%)"&&%&""   &= /AG&)*"=&!&?&&!& 45G%&F&&    *K;  & ! ) !F!  && "=&&"  ;" *= &"&>"#35G6

 =& && *?  *<!  *&!"  & # (& &&  %&" "  &= /AG &=&" %&"6

  %%& *<%& %8 = ;&"  %&  *" % %" " *%&#!8>!%%>& & % -&8! *& %& #  <! )     ;&)" = "%   %&"  &=  !?&; # %" ! ;B&"-&B"  ;   3,A & %&B"&;" 7 3@64: &  "%   %&"  &=  && %8    % &6   <%" ) *<!  !"  ;"" !&&&  "= B; % "&)); ;&"? M )+!-&B%"&)**? 44%&%">) 42+!-&B ;& >?!-;%=&%F&& >J >!6(&")*!8*<!)&%& "=&- ! <!&>!6   "")*<!) >!&  !&   !?&"  =  B !? = "B!&  &=&?&"7!&?&"3& A:&)*!&&&"= %;)B-%&B" >>



012340155/  ,2041,   !!?>";B!&&()*<;<&% &%#  &&   6    !  %&"  &= &&  *&=&"&" &&-&%&" &=&B") 455G   &=&"  %&" && !%&  !&& >& &&> =  !&  !& 1AG 8>"=155A=& !&& >&6 (&  8& *%&!%?&"# %& B;%"#/6AL >J"%"&&=# %&%& %&,#,><>< B#*;#&%&&&) , # @5!&& ?&, # A#45!& *&%& !&& %"!8& !B#= !,B6

*<%&*&<%!"*"=& *"&& &" &%&" &=&!&&>&> H!&<%)"&!&="  %&  =6 +  & B"& & =&  && ) &!!& %& &&& ?(&=%&&  &-% *%%"&6

 & && *<%&)&# %&""   &=   ">"& < < %%&     I ( & 1 (& 155/)&&%&""  &=#A5G &=&" %B-) & ) =&  = 6   < %%&  !"  &&&?# %%"=& %&""  &=  &<%)%)%&%#*%%"& *<%&  & )  %%& *& % >>!!& !&="6     %%&  1(& 155/  !"  &&& >!  ;& %" % *<%&!!?&&&< %&""  &= /AG =)&;;=& *"&&;) %"=6% &&% =&;!&&>&&%*<%&)& %*& &)BC <!"  &)*"&"%8  #%%"& >>"& !F!&& >&6- =)   *<%&  & O !& ;"  & %"(&6   *<%&  <!"  &  ! 155/ & %8  "?&   %"(&  *"&& ;) !&" %  !"  &&&  & )  "=&&!%& *"=& *"&& &" &6"&" &&&!8 &&!>&"  &=<! )!%&;) && "&=;?(&>6- *"&?! )& ?!& <;? * "  % ?(&=!& %?6  >>& !%&&  >>&"!&8 %=!%%&?(&=  *">>&%%(&>= &"7&8%&P '  %?"  @5=!? 1553  I5505@  6 @61:6  & ";   &  *<%&!" &&&*%!"=  =; ;&"  &#&=%& *"6")& "& & !%&   %&  =  !"  &&&6   (; %& & &



012340155/  ,.041,   & !%&  >& )  *<%"  !"  &&& & ;""!&   &#% %&%%&& &  >)*&# 7 '41A@A4 6@?0??&:6

&& " ) *%%"&  !"  &&&  %!& %  &   =%?& %%&  & %%"& *%&"  &= "   /A G ?!& <;?   &=&"  %&" > &  && )  %%& *<%& !%& &&   & (% & %!&&&   N&  % > %?& 7>6 '41A@A1 6@&">":6+& =%  ?6

26 =&!&& %"  &< *= &"6

 !%  = *>>&  8;    B>>&  <&!&)%?!&&  <=&>&&* = *&  >>" %!&&&    &< *= &" 7!"&B  ;"" !% =P '412@5 644534@I 6 1&1?:6%" #!% ==& % !!&     & #  &P  = = &  = &" =&F& "&!"%%%&#!F!!!&&! >&  =%&? *> &#&=()*!!&Q  "&  =&F&%!%&7 '41.111&4124/3:6

 8; ;""  = B-%&B"&)   % =   "&!  "&?&  ;"   =!? %"% "&  )* & >>&=!& % "  !!& "&!&   "&&  ? &"  && !%&  *"=&   ()* !!&  %"   "7 '41.113 636@64:6

&= *=  &F&"="=&&&>& && %>8& *&""6)*"*%% *&=&" &=&" %&"%!&&& !&&%!&=%&"  &=" &!&#)&?!&<;? %&  = *=  %& F& "="   ?  " &&&) & )*"&& *)F&&& 7,%89++:%?" % *>> >" "   &&&) 7,%8 9 '+:   ?  &&&) 7 '41I/A 6@?0&??:6">8#&&&)  ?&&  "> &&(!" =&

7 '413@1@ 6@?0??:6

! )&& &&&) =&F&" & "%   *!?  & % & %>   %& 7!&& "  B % K; "  = &&"0&"; *&&  "( & &< *%&: & "& *



012340155/  ,45041,   "=&   !&  %= *%%"&6  " & ;? !<!! 1AG&&&)%!& &!%&  >>"& ""!&)%=&>= *&=&"&=7 '41I/A  6A?0,:6

.6  %%&  *&61.6 4 &6 ?   % %"  #  !%  ==& %155I%)*%&" &=&&&&" %42>"=155A&) !  %&& & 1A=155I6

+  )& % *!%-  41 ( 155I    & &"&"155I 11>6%B&&&#&"6  .B %(&A(%!71@35B%":*"8=#A4*325 >6%&C8! 3*1.5>67A4*325941:&== &" AA*//5>6F!& &) %1553&!& *&!"*-% * %&!&&#* %&& 155A & 155I 8  ) *!%-  %""   & )& ) *" ;;&( *B&155I11>6

  ) &  = *=   & *-& %  &=&" &==& ">"< " *++6 !%&& *&=&"  ?&&&   !%  %&" # =  &= "; & >=& *& %& ">"&)%=&%"&  B!!>>&& &=&"!%&"%"&&= &%="7++ 155I 4%6A@= )>&3:6*"8=155I#AI*/23>673*3@/< 41:%&4@8!!% &)*&&!%& *%&"  &= /AG #31*A22>6 &>>"=&>>!!& =" *&=&"  )>" % )* & !? *&  & !!" &!&?&7 ' %?" 4A=!?155I 11205A 6A6161:6%%)?&&  "&> "   B  &=  )& B 7 ' 41.  345  6 @6461:  = &&&) & F&  %&" # *B  &=  155I ) &  346/ B % ! 7'+ " !  &=   &%: & # 33*@.2>6 731*A22 < 346/ 9 35:6 &!& #  )*>>! *&!" # &&  !&   !&  1A G  ! % *<%&  && % !%&  >>"& ""!& ) %=& >  =  *&=&" &= %)*&&)!&&!& -&B! &=6=B *%&&%&<)*&=&"";8#&!%%&)& !?"!"")*&=!%#%&!%&=%& B; *&%&&K;" A2!!&  "?& *"=& &#&&  &"*&!&" #*"%! &)*%&?&)* !"=") &&&)7 ' %?" 45!1551 324054 63& 1 "!?1551A55051 6463646:6



012340155/  ,44041,    ")&  -    %"  #  ?&&!&  15 G    !&&"&<%& *%&#*&" =#K;& #>?& &)= *=  &F&F&"#@A*A42>6 35733*@.2<25G:&&< *= &"#@IG7AA*//5,@A*A426359AA*//5:&< )&>>&%  &#& *= &"6

  *,= &" * % # "%   >>&"  & % &=  !% %%%" " #  K;  #  !)  >!& %>6+*&=) &>&,"&;#*= &",(& E";;?% "&! &&=&")*%& ?!&<; *"&&&% & %%"!& ) # %&  &8 ?!& <;? * &=&" & %&? *> *"&   *= &" !F! *  & %> >> = !%?  BB * % & %&& *&&   %&" &=" 7 '45/4/ 61%614 ' %?" @//0.2 12(&4... 64&">"%?"+4...%613I& 452105I 13%&!?155/ 6161:6

456 > "(&"6 = & -  ! &%!& *"!!& 155>6



012340155/  ,41041,  

 ! 4* 3  *  !*  ! ! 

 

  5.

46 "=?6

 5

16 (&&6

@6 &"!!& 155>6#B; &6

36 >!  %&   )O %=& >!  &  %"& F&   "  @5 ( 8  &>& %8  ? >" " 7+BRCB>)II553  :%= !&8  & %?>!"!&<&621 >" " ?>" " 4/ ( 155A 7 ':P  !"!   &  )   !&> & !- %=&%&;& & ! &P & F&  "  ? >" " % = %&  % = "&) <  &  *&6 31  '6  %"& F& &  %8  %  &=)"!!!- %= =&F&(&#*=6  ;>>8  %" &         ? +        "&,(&9 B%% S

%>! %"&F&&&>"<%&)O#O>>>" " %;>>



012340155/

