diff --git a/sigi/apps/convenios/admin.py b/sigi/apps/convenios/admin.py
index 51f69f9..6530e61 100644
--- a/sigi/apps/convenios/admin.py
+++ b/sigi/apps/convenios/admin.py
@@ -104,7 +104,7 @@ class ConvenioVigenteFilter(admin.filters.SimpleListFilter):
 
 @admin.register(Projeto)
 class ProjetoAdmin(admin.ModelAdmin):
-    list_display = ("sigla", "nome")
+    list_display = ("sigla", "nome", "termino_indefinido")
     formfield_overrides = {HTMLField: {"widget": AdminTinyMCE}}
 
 
diff --git a/sigi/apps/convenios/migrations/0038_projeto_termino_indefinido.py b/sigi/apps/convenios/migrations/0038_projeto_termino_indefinido.py
new file mode 100644
index 0000000..d031d06
--- /dev/null
+++ b/sigi/apps/convenios/migrations/0038_projeto_termino_indefinido.py
@@ -0,0 +1,22 @@
+# Generated by Django 5.2.1 on 2025-05-23 20:30
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ("convenios", "0037_ajusta_acts_pendentes_gertiq_184827"),
+    ]
+
+    operations = [
+        migrations.AddField(
+            model_name="projeto",
+            name="termino_indefinido",
+            field=models.BooleanField(
+                default=True,
+                help_text="Indica se os convênios deste tipo podem estar vigentes sem ter uma data de término de vigência.",
+                verbose_name="Término indefinido",
+            ),
+        ),
+    ]
diff --git a/sigi/apps/convenios/models.py b/sigi/apps/convenios/models.py
index 23ba55d..33774f4 100644
--- a/sigi/apps/convenios/models.py
+++ b/sigi/apps/convenios/models.py
@@ -1,6 +1,5 @@
 import re
 import requests
-from difflib import SequenceMatcher
 from hashlib import md5
 from pathlib import Path
 from django.db import models
@@ -55,6 +54,14 @@ class Projeto(models.Model):
     )
     nome = models.CharField(max_length=50)
     sigla = models.CharField(max_length=10)
+    termino_indefinido = models.BooleanField(
+        _("Término indefinido"),
+        default=True,
+        help_text=_(
+            "Indica se os convênios deste tipo podem estar vigentes sem ter "
+            "uma data de término de vigência."
+        ),
+    )
     texto_oficio = HTMLField(
         _("texto do ofício"), blank=True, help_text=OFICIO_HELP
     )
@@ -380,17 +387,18 @@ class Convenio(models.Model):
             if display_type == "numero":
                 display = self.num_processo_sf
             else:
-                display = "<i class='material-icons'>visibility</i>"
+                display = '<i class="bi bi-eye"></i>'
             return (
                 f'<a href="https://intra.senado.leg.br/sigad/novo/protocolo/'
                 f"impressao.asp?area=processo&txt_numero_orgao={orgao}"
                 f'&txt_numero_sequencial={sequencial}&txt_numero_ano={ano}" '
+                f'title="{self.num_processo_sf}" '
                 f'target="_blank">{display}</a>'
             )
         if display_type == "numero":
             return self.num_processo_sf
         else:
-            return "<i class='material-icons'>visibility_off</i>"
+            return '<i class="bi bi-eye-slash"></i>'
 
     def get_url_gescon(self):
         if not self.id_contrato_gescon:
@@ -410,7 +418,7 @@ class Convenio(models.Model):
     def clean(self):
         # Gertiq #184827
         if self.num_convenio:
-            if (
+            if not self.projeto.termino_indefinido and (
                 self.data_retorno_assinatura is None
                 or self.data_termino_vigencia is None
             ):