diff --git a/app/controllers/new_user/dossiers_controller.rb b/app/controllers/new_user/dossiers_controller.rb
index f710fe14f..ebac58847 100644
--- a/app/controllers/new_user/dossiers_controller.rb
+++ b/app/controllers/new_user/dossiers_controller.rb
@@ -73,7 +73,7 @@ module NewUser
         @dossier.en_construction!
         NotificationMailer.send_initiated_notification(@dossier).deliver_later
         redirect_to merci_dossier_path(@dossier)
-      elsif owns_dossier?
+      elsif current_user.owns?(dossier)
         redirect_to users_dossier_recapitulatif_path(@dossier)
       else
         redirect_to users_dossiers_invite_path(@dossier.invite_for_user(current_user))
@@ -142,7 +142,7 @@ module NewUser
     end
 
     def ensure_ownership!
-      if !owns_dossier?
+      if !current_user.owns?(dossier)
         forbidden!
       end
     end
@@ -154,7 +154,7 @@ module NewUser
     end
 
     def forbid_invite_submission!
-      if passage_en_construction? && !owns_dossier?
+      if passage_en_construction? && !current_user.owns?(dossier)
         forbidden!
       end
     end
@@ -172,10 +172,6 @@ module NewUser
       params.require(:dossier).permit(:autorisation_donnees)
     end
 
-    def owns_dossier?
-      dossier.user_id == current_user.id
-    end
-
     def passage_en_construction?
       dossier.brouillon? && !draft?
     end
diff --git a/app/models/user.rb b/app/models/user.rb
index 2de403c64..57c049ade 100644
--- a/app/models/user.rb
+++ b/app/models/user.rb
@@ -38,6 +38,10 @@ class User < ApplicationRecord
     loged_in_with_france_connect.present?
   end
 
+  def owns?(dossier)
+    dossier.user_id == id
+  end
+
   def invite?(dossier_id)
     invites.pluck(:dossier_id).include?(dossier_id.to_i)
   end
diff --git a/app/views/layouts/left_panels/_left_panel_users_recapitulatifcontroller_show.html.haml b/app/views/layouts/left_panels/_left_panel_users_recapitulatifcontroller_show.html.haml
index 1e5a3a253..6c3499cd4 100644
--- a/app/views/layouts/left_panels/_left_panel_users_recapitulatifcontroller_show.html.haml
+++ b/app/views/layouts/left_panels/_left_panel_users_recapitulatifcontroller_show.html.haml
@@ -14,7 +14,7 @@
   .dossier-state= @facade.dossier.display_state
   .split-hr-left
 
-  - if @facade.dossier.user == current_user
+  - if current_user.owns?(@facade.dossier)
     .text-center.mt-1
       = link_to ask_deletion_dossier_path(@facade.dossier), method: :post, class: "btn btn-danger", data: { confirm: delete_dossier_confirm(@facade.dossier) } do
         Supprimer définitivement
diff --git a/app/views/shared/dossiers/_edit.html.haml b/app/views/shared/dossiers/_edit.html.haml
index f9df14445..79de4e7f4 100644
--- a/app/views/shared/dossiers/_edit.html.haml
+++ b/app/views/shared/dossiers/_edit.html.haml
@@ -58,7 +58,7 @@
             class: 'button send',
             data: { action: 'draft', disable_with: 'Envoi...' }
 
-          - if dossier.user == current_user
+          - if current_user.owns?(dossier)
             = f.button 'Soumettre le dossier',
               class: 'button send primary',
               data: { action: 'submit', disable_with: 'Envoi...' }
diff --git a/spec/models/user_spec.rb b/spec/models/user_spec.rb
index 848909a51..a9a2e24fa 100644
--- a/spec/models/user_spec.rb
+++ b/spec/models/user_spec.rb
@@ -31,6 +31,37 @@ describe User, type: :model do
     end
   end
 
+  describe '#owns?' do
+    let(:owner) { create(:user) }
+    let(:dossier) { create(:dossier, user: owner) }
+    let(:invite_user) { create(:user) }
+    let(:invite_gestionnaire) { create(:user) }
+
+    subject { user.owns?(dossier) }
+
+    context 'when user is owner' do
+      let(:user) { owner }
+
+      it { is_expected.to be_truthy }
+    end
+
+    context 'when user was invited by user' do
+      before do
+        create(:invite, dossier: dossier, user: invite_user, type: 'InviteUser')
+      end
+
+      let(:user) { invite_user }
+
+      it { is_expected.to be_falsy }
+    end
+
+    context 'when user is quidam' do
+      let(:user) { create(:user) }
+
+      it { is_expected.to be_falsey }
+    end
+  end
+
   describe '#invite?' do
     let(:dossier) { create :dossier }
     let(:user) { dossier.user }