diff --git a/addons/phone_validation/lib/phonenumbers_patch/__init__.py b/addons/phone_validation/lib/phonenumbers_patch/__init__.py
index e79f6d96a8e..dc8dc8b991d 100644
--- a/addons/phone_validation/lib/phonenumbers_patch/__init__.py
+++ b/addons/phone_validation/lib/phonenumbers_patch/__init__.py
@@ -17,16 +17,24 @@
 
 from odoo.tools.parse_version import parse_version
 
+
+def _local_load_region(code):
+    __import__("region_%s" % code, globals(), locals(),
+        fromlist=["PHONE_METADATA_%s" % code], level=1)
+
+
 try:
     import phonenumbers
     # MONKEY PATCHING phonemetadata of Ivory Coast if phonenumbers is too old
     if parse_version('7.6.1') <= parse_version(phonenumbers.__version__) < parse_version('8.12.32'):
-        def _local_load_region(code):
-            __import__("region_%s" % code, globals(), locals(),
-                fromlist=["PHONE_METADATA_%s" % code], level=1)
         # loading updated region_CI.py from current directory
         # https://github.com/daviddrysdale/python-phonenumbers/blob/v8.12.32/python/phonenumbers/data/region_CI.py
         phonenumbers.phonemetadata.PhoneMetadata.register_region_loader('CI', _local_load_region)
+    # MONKEY PATCHING phonemetadata of Panama if phonenumbers is too old
+    if parse_version(phonenumbers.__version__) < parse_version('8.12.43'):
+        # region_PA.py in the current directory was copied from external source:
+        # https://github.com/daviddrysdale/python-phonenumbers/blob/v8.12.43/python/phonenumbers/data/region_PA.py
+        phonenumbers.phonemetadata.PhoneMetadata.register_region_loader('PA', _local_load_region)
     # MONKEY PATCHING phonemetadata to fix Brazilian phonenumbers following 2016 changes
     def _hook_load_region(code):
         phonenumbers.data._load_region(code)
diff --git a/addons/phone_validation/lib/phonenumbers_patch/region_PA.py b/addons/phone_validation/lib/phonenumbers_patch/region_PA.py
new file mode 100644
index 00000000000..739546fca24
--- /dev/null
+++ b/addons/phone_validation/lib/phonenumbers_patch/region_PA.py
@@ -0,0 +1,13 @@
+"""Auto-generated file, do not edit by hand. PA metadata"""
+from ..phonemetadata import NumberFormat, PhoneNumberDesc, PhoneMetadata
+
+PHONE_METADATA_PA = PhoneMetadata(id='PA', country_code=507, international_prefix='00',
+    general_desc=PhoneNumberDesc(national_number_pattern='(?:00800|8\\d{3})\\d{6}|[68]\\d{7}|[1-57-9]\\d{6}', possible_length=(7, 8, 10, 11)),
+    fixed_line=PhoneNumberDesc(national_number_pattern='(?:1(?:0\\d|1[479]|2[37]|3[0137]|4[17]|5[05]|6[58]|7[0167]|8[258]|9[1389])|2(?:[0235-79]\\d|1[0-7]|4[013-9]|8[02-9])|3(?:[089]\\d|1[0-7]|2[0-5]|33|4[0-79]|5[05]|6[068]|7[0-8])|4(?:00|3[0-579]|4\\d|7[0-57-9])|5(?:[01]\\d|2[0-7]|[56]0|79)|7(?:0[09]|2[0-26-8]|3[03]|4[04]|5[05-9]|6[056]|7[0-24-9]|8[6-9]|90)|8(?:09|2[89]|3\\d|4[0-24-689]|5[014]|8[02])|9(?:0[5-9]|1[0135-8]|2[036-9]|3[35-79]|40|5[0457-9]|6[05-9]|7[04-9]|8[35-8]|9\\d))\\d{4}', example_number='2001234', possible_length=(7,)),
+    mobile=PhoneNumberDesc(national_number_pattern='(?:1[16]1|21[89]|6\\d{3}|8(?:1[01]|7[23]))\\d{4}', example_number='61234567', possible_length=(7, 8)),
+    toll_free=PhoneNumberDesc(national_number_pattern='800\\d{4,5}|(?:00800|800\\d)\\d{6}', example_number='8001234', possible_length=(7, 8, 10, 11)),
+    premium_rate=PhoneNumberDesc(national_number_pattern='(?:8(?:22|55|60|7[78]|86)|9(?:00|81))\\d{4}', example_number='8601234', possible_length=(7,)),
+    number_format=[NumberFormat(pattern='(\\d{3})(\\d{4})', format='\\1-\\2', leading_digits_pattern=['[1-57-9]']),
+        NumberFormat(pattern='(\\d{4})(\\d{4})', format='\\1-\\2', leading_digits_pattern=['[68]']),
+        NumberFormat(pattern='(\\d{3})(\\d{3})(\\d{4})', format='\\1 \\2 \\3', leading_digits_pattern=['8'])],
+    mobile_number_portable_region=True)
diff --git a/addons/phone_validation/tests/test_phonenumbers_patch.py b/addons/phone_validation/tests/test_phonenumbers_patch.py
index a1d4d3321ce..9626708bf10 100644
--- a/addons/phone_validation/tests/test_phonenumbers_patch.py
+++ b/addons/phone_validation/tests/test_phonenumbers_patch.py
@@ -33,16 +33,37 @@ class TestPhonenumbersPatch(BaseCase):
         if not phonenumbers:
             self.skipTest('Cannot test without phonenumbers module installed.')
         # MONKEY PATCHING phonemetadata of Ivory Coast if phonenumbers is too old
-        if parse_version('7.6.1') <= parse_version(phonenumbers.__version__) < parse_version('8.12.32'):
-            # check that _local_load_region is set to `odoo.addons.phone_validation.lib.phonenumbers_patch._local_load_region`
-            # check that you can load a new ivory coast phone number without error
-            parsed_phonenumber_1 = phonenumbers.parse("20 25/35-51 ", region="CI", keep_raw_input=True)
-            self.assertEqual(parsed_phonenumber_1.national_number, 20253551, "The national part of the phonenumber should be 22522586")
-            self.assertEqual(parsed_phonenumber_1.country_code, 225, "The country code of Ivory Coast is 225")
+        if not parse_version('7.6.1') <= parse_version(phonenumbers.__version__) < parse_version('8.12.32'):
+            self.assertNotEqual(
+                phonenumbers.PhoneMetadata._region_available['CI'],
+                phonenumbers_patch._local_load_region,
+                "The code should not be monkey patched with phonenumbers > 8.12.32.",
+            )
+        # check that you can load a new ivory coast phone number without error
+        parsed_phonenumber_1 = phonenumbers.parse("20 25/35-51 ", region="CI", keep_raw_input=True)
+        self.assertEqual(parsed_phonenumber_1.national_number, 20253551, "The national part of the phonenumber should be 22522586")
+        self.assertEqual(parsed_phonenumber_1.country_code, 225, "The country code of Ivory Coast is 225")
 
-            parsed_phonenumber_2 = phonenumbers.parse("+225 22 52 25 86 ", region="CI", keep_raw_input=True)
-            self.assertEqual(parsed_phonenumber_2.national_number, 22522586, "The national part of the phonenumber should be 22522586")
-            self.assertEqual(parsed_phonenumber_2.country_code, 225, "The country code of Ivory Coast is 225")
-        else:
-            self.assertFalse(hasattr(phonenumbers_patch, '_local_load_region'),
-                "The code should not be monkey patched with phonenumbers > 8.12.32.")
+        parsed_phonenumber_2 = phonenumbers.parse("+225 22 52 25 86 ", region="CI", keep_raw_input=True)
+        self.assertEqual(parsed_phonenumber_2.national_number, 22522586, "The national part of the phonenumber should be 22522586")
+        self.assertEqual(parsed_phonenumber_2.country_code, 225, "The country code of Ivory Coast is 225")
+
+    def test_region_PA_monkey_patch(self):
+        """Makes sure that patch for Panama's phone numbers work"""
+        if not phonenumbers:
+            self.skipTest('Cannot test without phonenumbers module installed.')
+        # MONKEY PATCHING phonemetadata of Panama if phonenumbers is too old
+        if parse_version(phonenumbers.__version__) >= parse_version('8.12.43'):
+            self.assertNotEqual(
+                phonenumbers.PhoneMetadata._region_available['PA'],
+                phonenumbers_patch._local_load_region,
+                "The phonenumbers module should not get patched after version 8.12.43",
+            )
+        # Mobile phone number without country code
+        parsed = phonenumbers.parse('6198 5462', region='PA')
+        self.assertTrue(phonenumbers.is_valid_number(parsed))
+        self.assertEqual(parsed.country_code, 507)
+        # Landline phone number with country code
+        parsed = phonenumbers.parse('+507 833 8744')
+        self.assertTrue(phonenumbers.is_valid_number(parsed))
+        self.assertEqual(parsed.national_number, 8338744)