diff --git a/scripts/checkpatch.pl b/scripts/checkpatch.pl
index 3eda411c042a..c45af9f9da2e 100755
--- a/scripts/checkpatch.pl
+++ b/scripts/checkpatch.pl
@@ -2312,6 +2312,10 @@ sub process {
 					     "email address '$email' might be better as '$suggested_email$comment'\n" . $herecurr);
 				}
 			}
+			if ($line =~ /^\s*signed-off-by:.*(quicinc|qualcomm)\.com/i) {
+				WARN("BAD_SIGN_OFF",
+				     "invalid Signed-off-by identity\n" . $line );
+			}			
 
 # Check for duplicate signatures
 			my $sig_nospace = $line;
@@ -2442,6 +2446,11 @@ sub process {
 			     "added, moved or deleted file(s), does MAINTAINERS need updating?\n" . $herecurr);
 		}
 
+#check the patch for invalid author credentials
+		if ($line =~ /^From:.*(quicinc|qualcomm)\.com/) {
+			WARN("BAD_AUTHOR", "invalid author identity\n" . $line );
+		}
+
 # Check for wrappage within a valid hunk of the file
 		if ($realcnt != 0 && $line !~ m{^(?:\+|-| |\\ No newline|$)}) {
 			ERROR("CORRUPTED_PATCH",