diff --git a/support/scripts/checkpackagelib_patch.py b/support/scripts/checkpackagelib_patch.py
index 131e42347f..ee46efb70f 100644
--- a/support/scripts/checkpackagelib_patch.py
+++ b/support/scripts/checkpackagelib_patch.py
@@ -3,5 +3,60 @@
 # functions don't need to check for things already checked by running
 # "make package-dirclean package-patch".
 
+import re
+
+from checkpackagebase import _CheckFunction
 # Notice: ignore 'imported but unused' from pyflakes for check functions.
 from checkpackagelib import NewlineAtEof
+
+
+class ApplyOrder(_CheckFunction):
+    APPLY_ORDER = re.compile("/\d{1,4}-[^/]*$")
+
+    def before(self):
+        if not self.APPLY_ORDER.search(self.filename):
+            return ["{}:0: use name <number>-<description>.patch "
+                    "({}#_providing_patches)"
+                    .format(self.filename, self.url_to_manual)]
+
+
+class NumberedSubject(_CheckFunction):
+    NUMBERED_PATCH = re.compile("Subject:\s*\[PATCH\s*\d+/\d+\]")
+
+    def before(self):
+        self.git_patch = False
+        self.lineno = 0
+        self.text = None
+
+    def check_line(self, lineno, text):
+        if text.startswith("diff --git"):
+            self.git_patch = True
+            return
+        if self.NUMBERED_PATCH.search(text):
+            self.lineno = lineno
+            self.text = text
+
+    def after(self):
+        if self.git_patch and self.text:
+            return ["{}:{}: generate your patches with 'git format-patch -N'"
+                    .format(self.filename, self.lineno),
+                    self.text]
+
+
+class Sob(_CheckFunction):
+    SOB_ENTRY = re.compile("^Signed-off-by: .*$")
+
+    def before(self):
+        self.found = False
+
+    def check_line(self, lineno, text):
+        if self.found:
+            return
+        if self.SOB_ENTRY.search(text):
+            self.found = True
+
+    def after(self):
+        if not self.found:
+            return ["{}:0: missing Signed-off-by in the header "
+                    "({}#_format_and_licensing_of_the_package_patches)"
+                    .format(self.filename, self.url_to_manual)]