diff --git a/src/consensus/activation.h b/src/consensus/activation.h
--- a/src/consensus/activation.h
+++ b/src/consensus/activation.h
@@ -25,4 +25,7 @@
 /** Check if May 15th, 2019 protocol upgrade has activated. */
 bool IsGreatWallEnabled(const Config &config, const CBlockIndex *pindexPrev);
 
+/** Check if Nov 15th, 2019 protocol upgrade has activated. */
+bool IsGravitonEnabled(const Config &config, const CBlockIndex *pindexPrev);
+
 #endif // BITCOIN_CONSENSUS_ACTIVATION_H
diff --git a/src/consensus/activation.cpp b/src/consensus/activation.cpp
--- a/src/consensus/activation.cpp
+++ b/src/consensus/activation.cpp
@@ -57,3 +57,14 @@
                "-greatwallactivationtime",
                config.GetChainParams().GetConsensus().greatWallActivationTime);
 }
+
+bool IsGravitonEnabled(const Config &config, const CBlockIndex *pindexPrev) {
+    if (pindexPrev == nullptr) {
+        return false;
+    }
+
+    return pindexPrev->GetMedianTimePast() >=
+           gArgs.GetArg(
+               "-gravitonactivationtime",
+               config.GetChainParams().GetConsensus().gravitonActivationTime);
+}
diff --git a/src/test/activation_tests.cpp b/src/test/activation_tests.cpp
--- a/src/test/activation_tests.cpp
+++ b/src/test/activation_tests.cpp
@@ -47,4 +47,28 @@
     BOOST_CHECK(IsGreatWallEnabled(config, &blocks.back()));
 }
 
+BOOST_AUTO_TEST_CASE(isgravitonenabled) {
+    DummyConfig config;
+    CBlockIndex prev;
+
+    const auto activation =
+        config.GetChainParams().GetConsensus().gravitonActivationTime;
+
+    BOOST_CHECK(!IsGravitonEnabled(config, nullptr));
+
+    std::array<CBlockIndex, 12> blocks;
+    for (size_t i = 1; i < blocks.size(); ++i) {
+        blocks[i].pprev = &blocks[i - 1];
+    }
+
+    SetMTP(blocks, activation - 1);
+    BOOST_CHECK(!IsGravitonEnabled(config, &blocks.back()));
+
+    SetMTP(blocks, activation);
+    BOOST_CHECK(IsGravitonEnabled(config, &blocks.back()));
+
+    SetMTP(blocks, activation + 1);
+    BOOST_CHECK(IsGravitonEnabled(config, &blocks.back()));
+}
+
 BOOST_AUTO_TEST_SUITE_END()
diff --git a/test/lint/check-doc.py b/test/lint/check-doc.py
--- a/test/lint/check-doc.py
+++ b/test/lint/check-doc.py
@@ -30,6 +30,8 @@
                         '-dbcrashratio',
                         '-debugnet',
                         '-forcecompactdb',
+                        # TODO remove after the Nov 2019 upgrade
+                        '-gravitonactivationtime',
                         # TODO remove after the may 2019 fork
                         '-greatwallactivationtime',
                         '-h',