diff --git a/Documentation/config-labels.txt b/Documentation/config-labels.txt
index 9d3446e..f44bf85 100644
--- a/Documentation/config-labels.txt
+++ b/Documentation/config-labels.txt
@@ -268,6 +268,32 @@
 If true, any score for the label is copied forward when a new patch
 set is uploaded. Defaults to false.
 
+[[label_copyCondition]]
+=== `label.Label-Name.copyCondition`
+
+If set, Gerrit matches patch set approvals against the provided query
+string. If the query matches, the approval is copied from one patch set
+to the next. The query language is the same as for
+link:user-search.html[other queries].
+
+This logic is triggered whenever a new patch set is uploaded.
+
+Gerrit currently supports the following predicates:
+
+==== change-kind:{REWORK,TRIVIAL_REBASE,MERGE_FIRST_PARENT_UPDATE,NO_CODE_CHANGE,NO_CHANGE}
+
+Matches if the diff between two patch sets was of a certain change kind.
+
+==== is:{MIN,MAX,ANY}
+
+Matches votes that are equal to the minimal or maximal voting range. Or any votes.
+
+==== Example
+
+----
+copyCondition = is:MIN OR -change-kind:REWORK
+----
+
 [[label_copyMinScore]]
 === `label.Label-Name.copyMinScore`
 
diff --git a/Documentation/rest-api-projects.txt b/Documentation/rest-api-projects.txt
index df83f1a..eb38434 100644
--- a/Documentation/rest-api-projects.txt
+++ b/Documentation/rest-api-projects.txt
@@ -3964,6 +3964,8 @@
 |`copy_any_score`|`false` if not set|
 Whether link:config-labels.html#label_copyAnyScore[copyAnyScore] is set on the
 label.
+|`copy_condition`|optional|
+See link:config-labels.html#label_copyCondition[copyCondition].
 |`copy_min_score`|`false` if not set|
 Whether link:config-labels.html#label_copyMinScore[copyMinScore] is set on the
 label.
@@ -4034,6 +4036,10 @@
 |`copy_any_score`|optional|
 Whether link:config-labels.html#label_copyAnyScore[copyAnyScore] is set on the
 label.
+|`copy_condition`|optional|
+See link:config-labels.html#label_copyCondition[copyCondition].
+|`unset_copy_condition`|optional|
+If true, clears the value stored in `copy_condition`.
 |`copy_min_score`|optional|
 Whether link:config-labels.html#label_copyMinScore[copyMinScore] is set on the
 label.
diff --git a/java/com/google/gerrit/entities/LabelType.java b/java/com/google/gerrit/entities/LabelType.java
index 9649642..d254752 100644
--- a/java/com/google/gerrit/entities/LabelType.java
+++ b/java/com/google/gerrit/entities/LabelType.java
@@ -24,6 +24,7 @@
 import java.util.ArrayList;
 import java.util.Collection;
 import java.util.List;
+import java.util.Optional;
 
 @AutoValue
 public abstract class LabelType {
@@ -128,6 +129,8 @@
 
   public abstract boolean isCanOverride();
 
+  public abstract Optional<String> getCopyCondition();
+
   @Nullable
   public abstract ImmutableList<String> getRefPatterns();
 
@@ -239,6 +242,8 @@
 
     public abstract Builder setCopyAnyScore(boolean copyAnyScore);
 
+    public abstract Builder setCopyCondition(@Nullable String copyCondition);
+
     public abstract Builder setCopyMinScore(boolean copyMinScore);
 
     public abstract Builder setCopyMaxScore(boolean copyMaxScore);
diff --git a/java/com/google/gerrit/extensions/common/LabelDefinitionInfo.java b/java/com/google/gerrit/extensions/common/LabelDefinitionInfo.java
index 9a6d086..6f733d6 100644
--- a/java/com/google/gerrit/extensions/common/LabelDefinitionInfo.java
+++ b/java/com/google/gerrit/extensions/common/LabelDefinitionInfo.java
@@ -26,6 +26,7 @@
   public List<String> branches;
   public Boolean canOverride;
   public Boolean copyAnyScore;
+  public String copyCondition;
   public Boolean copyMinScore;
   public Boolean copyMaxScore;
   public Boolean copyAllScoresIfListOfFilesDidNotChange;
diff --git a/java/com/google/gerrit/extensions/common/LabelDefinitionInput.java b/java/com/google/gerrit/extensions/common/LabelDefinitionInput.java
index 87cae86..38b76c1 100644
--- a/java/com/google/gerrit/extensions/common/LabelDefinitionInput.java
+++ b/java/com/google/gerrit/extensions/common/LabelDefinitionInput.java
@@ -25,6 +25,8 @@
   public List<String> branches;
   public Boolean canOverride;
   public Boolean copyAnyScore;
+  public String copyCondition;
+  public Boolean unsetCopyCondition;
   public Boolean copyMinScore;
   public Boolean copyMaxScore;
   public Boolean copyAllScoresIfListOfFilesDidNotChange;
diff --git a/java/com/google/gerrit/pgm/util/BatchProgramModule.java b/java/com/google/gerrit/pgm/util/BatchProgramModule.java
index 2cfc49f..2378a93 100644
--- a/java/com/google/gerrit/pgm/util/BatchProgramModule.java
+++ b/java/com/google/gerrit/pgm/util/BatchProgramModule.java
@@ -79,6 +79,8 @@
 import com.google.gerrit.server.project.ProjectCacheImpl;
 import com.google.gerrit.server.project.ProjectState;
 import com.google.gerrit.server.project.SubmitRuleEvaluator;
+import com.google.gerrit.server.query.approval.ChangeKindPredicate;
+import com.google.gerrit.server.query.approval.MagicValuePredicate;
 import com.google.gerrit.server.query.change.ChangeData;
 import com.google.gerrit.server.query.change.ChangeIsVisibleToPredicate;
 import com.google.gerrit.server.restapi.group.GroupModule;
@@ -148,6 +150,8 @@
     factory(MergeUtil.Factory.class);
     factory(PatchSetInserter.Factory.class);
     factory(RebaseChangeOp.Factory.class);
+    factory(ChangeKindPredicate.Factory.class);
+    factory(MagicValuePredicate.Factory.class);
 
     // As Reindex is a batch program, don't assume the index is available for
     // the change cache.
diff --git a/java/com/google/gerrit/server/ApprovalInference.java b/java/com/google/gerrit/server/ApprovalInference.java
index 675c470..031e788 100644
--- a/java/com/google/gerrit/server/ApprovalInference.java
+++ b/java/com/google/gerrit/server/ApprovalInference.java
@@ -29,9 +29,11 @@
 import com.google.gerrit.entities.Patch.ChangeType;
 import com.google.gerrit.entities.PatchSet;
 import com.google.gerrit.entities.PatchSetApproval;
+import com.google.gerrit.entities.Project;
 import com.google.gerrit.exceptions.StorageException;
 import com.google.gerrit.extensions.client.ChangeKind;
 import com.google.gerrit.extensions.client.DiffPreferencesInfo;
+import com.google.gerrit.index.query.QueryParseException;
 import com.google.gerrit.server.change.ChangeKindCache;
 import com.google.gerrit.server.change.LabelNormalizer;
 import com.google.gerrit.server.logging.Metadata;
@@ -44,6 +46,8 @@
 import com.google.gerrit.server.patch.PatchListNotAvailableException;
 import com.google.gerrit.server.project.ProjectCache;
 import com.google.gerrit.server.project.ProjectState;
+import com.google.gerrit.server.query.approval.ApprovalContext;
+import com.google.gerrit.server.query.approval.ApprovalQueryBuilder;
 import com.google.inject.Inject;
 import com.google.inject.Singleton;
 import java.util.Collection;
@@ -68,17 +72,20 @@
   private final ChangeKindCache changeKindCache;
   private final LabelNormalizer labelNormalizer;
   private final PatchListCache patchListCache;
+  private final ApprovalQueryBuilder approvalQueryBuilder;
 
   @Inject
   ApprovalInference(
       ProjectCache projectCache,
       ChangeKindCache changeKindCache,
       LabelNormalizer labelNormalizer,
-      PatchListCache patchListCache) {
+      PatchListCache patchListCache,
+      ApprovalQueryBuilder approvalQueryBuilder) {
     this.projectCache = projectCache;
     this.changeKindCache = changeKindCache;
     this.labelNormalizer = labelNormalizer;
     this.patchListCache = patchListCache;
+    this.approvalQueryBuilder = approvalQueryBuilder;
   }
 
   /**
@@ -105,7 +112,7 @@
     }
   }
 
-  private static boolean canCopy(
+  private static boolean canCopyBasedOnBooleanLabelConfigs(
       ProjectState project,
       PatchSetApproval psa,
       PatchSet.Id psId,
@@ -309,6 +316,21 @@
     }
   }
 
+  private boolean canCopyBasedOnCopyCondition(
+      Project.NameKey project, PatchSetApproval psa, PatchSet.Id psId, LabelType type) {
+    if (!type.getCopyCondition().isPresent()) {
+      return false;
+    }
+    ApprovalContext ctx = ApprovalContext.create(project, psa, psId);
+    try {
+      return approvalQueryBuilder.parse(type.getCopyCondition().get()).asMatchable().match(ctx);
+    } catch (QueryParseException e) {
+      logger.atWarning().withCause(e).log(
+          "Unable to copy label because config is invalid. This should have been caught before.");
+      return false;
+    }
+  }
+
   private Collection<PatchSetApproval> getForPatchSetWithoutNormalization(
       ChangeNotes notes,
       ProjectState project,
@@ -380,7 +402,8 @@
       if (patchList == null && type != null && type.isCopyAllScoresIfListOfFilesDidNotChange()) {
         patchList = getPatchList(project, ps, priorPatchSet);
       }
-      if (!canCopy(project, psa, ps.id(), kind, type, patchList)) {
+      if (!canCopyBasedOnBooleanLabelConfigs(project, psa, ps.id(), kind, type, patchList)
+          && !canCopyBasedOnCopyCondition(project.getNameKey(), psa, ps.id(), type)) {
         continue;
       }
       resultByUser.put(psa.label(), psa.accountId(), psa.copyWithPatchSet(ps.id()));
diff --git a/java/com/google/gerrit/server/cache/serialize/entities/LabelTypeSerializer.java b/java/com/google/gerrit/server/cache/serialize/entities/LabelTypeSerializer.java
index 4627cdb..c00961f 100644
--- a/java/com/google/gerrit/server/cache/serialize/entities/LabelTypeSerializer.java
+++ b/java/com/google/gerrit/server/cache/serialize/entities/LabelTypeSerializer.java
@@ -18,6 +18,7 @@
 
 import com.google.common.base.Converter;
 import com.google.common.base.Enums;
+import com.google.common.base.Strings;
 import com.google.common.collect.ImmutableList;
 import com.google.common.primitives.Shorts;
 import com.google.gerrit.entities.LabelFunction;
@@ -39,6 +40,7 @@
         .setAllowPostSubmit(proto.getAllowPostSubmit())
         .setIgnoreSelfApproval(proto.getIgnoreSelfApproval())
         .setDefaultValue(Shorts.saturatedCast(proto.getDefaultValue()))
+        .setCopyCondition(Strings.emptyToNull(proto.getCopyCondition()))
         .setCopyAnyScore(proto.getCopyAnyScore())
         .setCopyMinScore(proto.getCopyMinScore())
         .setCopyMaxScore(proto.getCopyMaxScore())
@@ -67,6 +69,7 @@
                 .map(LabelValueSerializer::serialize)
                 .collect(toImmutableList()))
         .setFunction(FUNCTION_CONVERTER.reverse().convert(autoValue.getFunction()))
+        .setCopyCondition(autoValue.getCopyCondition().orElse(""))
         .setCopyAnyScore(autoValue.isCopyAnyScore())
         .setCopyMinScore(autoValue.isCopyMinScore())
         .setCopyMaxScore(autoValue.isCopyMaxScore())
diff --git a/java/com/google/gerrit/server/project/LabelDefinitionJson.java b/java/com/google/gerrit/server/project/LabelDefinitionJson.java
index 730162f..63c9d22 100644
--- a/java/com/google/gerrit/server/project/LabelDefinitionJson.java
+++ b/java/com/google/gerrit/server/project/LabelDefinitionJson.java
@@ -32,6 +32,7 @@
     label.defaultValue = labelType.getDefaultValue();
     label.branches = labelType.getRefPatterns() != null ? labelType.getRefPatterns() : null;
     label.canOverride = toBoolean(labelType.isCanOverride());
+    label.copyCondition = labelType.getCopyCondition().orElse(null);
     label.copyAnyScore = toBoolean(labelType.isCopyAnyScore());
     label.copyMinScore = toBoolean(labelType.isCopyMinScore());
     label.copyMaxScore = toBoolean(labelType.isCopyMaxScore());
diff --git a/java/com/google/gerrit/server/project/ProjectConfig.java b/java/com/google/gerrit/server/project/ProjectConfig.java
index 5ac5ac7..027cf17 100644
--- a/java/com/google/gerrit/server/project/ProjectConfig.java
+++ b/java/com/google/gerrit/server/project/ProjectConfig.java
@@ -112,6 +112,7 @@
   public static final String KEY_ALLOW_POST_SUBMIT = "allowPostSubmit";
   public static final String KEY_IGNORE_SELF_APPROVAL = "ignoreSelfApproval";
   public static final String KEY_COPY_ANY_SCORE = "copyAnyScore";
+  public static final String KEY_COPY_CONDITION = "copyCondition";
   public static final String KEY_COPY_MAX_SCORE = "copyMaxScore";
   public static final String KEY_COPY_ALL_SCORES_IF_LIST_OF_FILES_DID_NOT_CHANGE =
       "copyAllScoresIfListOfFilesDidNotChange";
@@ -1075,6 +1076,7 @@
                     KEY_FUNCTION, name, Joiner.on(", ").join(LabelFunction.ALL.keySet()))));
       }
       label.setFunction(function.orElse(null));
+      label.setCopyCondition(rc.getString(LABEL, name, KEY_COPY_CONDITION));
 
       if (!values.isEmpty()) {
         short dv = (short) rc.getInt(LABEL, name, KEY_DEFAULT_VALUE, 0);
@@ -1664,6 +1666,11 @@
         values.add(value.format().trim());
       }
       rc.setStringList(LABEL, name, KEY_VALUE, values);
+      if (label.getCopyCondition().isPresent()) {
+        rc.setString(LABEL, name, KEY_COPY_CONDITION, label.getCopyCondition().get());
+      } else {
+        rc.unset(LABEL, name, KEY_COPY_CONDITION);
+      }
 
       List<String> refPatterns = label.getRefPatterns();
       if (refPatterns != null && !refPatterns.isEmpty()) {
diff --git a/java/com/google/gerrit/server/restapi/project/CreateLabel.java b/java/com/google/gerrit/server/restapi/project/CreateLabel.java
index 2ae1b05..dab7693 100644
--- a/java/com/google/gerrit/server/restapi/project/CreateLabel.java
+++ b/java/com/google/gerrit/server/restapi/project/CreateLabel.java
@@ -26,6 +26,7 @@
 import com.google.gerrit.extensions.restapi.ResourceConflictException;
 import com.google.gerrit.extensions.restapi.Response;
 import com.google.gerrit.extensions.restapi.RestCollectionCreateView;
+import com.google.gerrit.index.query.QueryParseException;
 import com.google.gerrit.server.CurrentUser;
 import com.google.gerrit.server.git.meta.MetaDataUpdate;
 import com.google.gerrit.server.permissions.PermissionBackend;
@@ -36,6 +37,7 @@
 import com.google.gerrit.server.project.ProjectCache;
 import com.google.gerrit.server.project.ProjectConfig;
 import com.google.gerrit.server.project.ProjectResource;
+import com.google.gerrit.server.query.approval.ApprovalQueryBuilder;
 import com.google.inject.Inject;
 import com.google.inject.Provider;
 import com.google.inject.Singleton;
@@ -51,6 +53,7 @@
   private final MetaDataUpdate.User updateFactory;
   private final ProjectConfig.Factory projectConfigFactory;
   private final ProjectCache projectCache;
+  private final ApprovalQueryBuilder approvalQueryBuilder;
 
   @Inject
   public CreateLabel(
@@ -58,12 +61,14 @@
       PermissionBackend permissionBackend,
       MetaDataUpdate.User updateFactory,
       ProjectConfig.Factory projectConfigFactory,
-      ProjectCache projectCache) {
+      ProjectCache projectCache,
+      ApprovalQueryBuilder approvalQueryBuilder) {
     this.user = user;
     this.permissionBackend = permissionBackend;
     this.updateFactory = updateFactory;
     this.projectConfigFactory = projectConfigFactory;
     this.projectCache = projectCache;
+    this.approvalQueryBuilder = approvalQueryBuilder;
   }
 
   @Override
@@ -166,6 +171,22 @@
       labelType.setCopyAnyScore(input.copyAnyScore);
     }
 
+    if (input.copyCondition != null) {
+      try {
+        approvalQueryBuilder.parse(input.copyCondition);
+      } catch (QueryParseException e) {
+        throw new BadRequestException(
+            "unable to parse copy condition. got: " + input.copyCondition, e);
+      }
+      if (Boolean.TRUE.equals(input.unsetCopyCondition)) {
+        throw new BadRequestException("can't set and unset copyCondition in the same request");
+      }
+      labelType.setCopyCondition(Strings.emptyToNull(input.copyCondition));
+    }
+    if (Boolean.TRUE.equals(input.unsetCopyCondition)) {
+      labelType.setCopyCondition(null);
+    }
+
     if (input.copyMinScore != null) {
       labelType.setCopyMinScore(input.copyMinScore);
     }
diff --git a/java/com/google/gerrit/server/restapi/project/SetLabel.java b/java/com/google/gerrit/server/restapi/project/SetLabel.java
index b1bcb15..a119656 100644
--- a/java/com/google/gerrit/server/restapi/project/SetLabel.java
+++ b/java/com/google/gerrit/server/restapi/project/SetLabel.java
@@ -23,6 +23,7 @@
 import com.google.gerrit.extensions.restapi.ResourceConflictException;
 import com.google.gerrit.extensions.restapi.Response;
 import com.google.gerrit.extensions.restapi.RestModifyView;
+import com.google.gerrit.index.query.QueryParseException;
 import com.google.gerrit.server.CurrentUser;
 import com.google.gerrit.server.git.meta.MetaDataUpdate;
 import com.google.gerrit.server.permissions.PermissionBackend;
@@ -32,6 +33,7 @@
 import com.google.gerrit.server.project.LabelResource;
 import com.google.gerrit.server.project.ProjectCache;
 import com.google.gerrit.server.project.ProjectConfig;
+import com.google.gerrit.server.query.approval.ApprovalQueryBuilder;
 import com.google.inject.Inject;
 import com.google.inject.Provider;
 import com.google.inject.Singleton;
@@ -45,6 +47,7 @@
   private final MetaDataUpdate.User updateFactory;
   private final ProjectConfig.Factory projectConfigFactory;
   private final ProjectCache projectCache;
+  private final ApprovalQueryBuilder approvalQueryBuilder;
 
   @Inject
   public SetLabel(
@@ -52,12 +55,14 @@
       PermissionBackend permissionBackend,
       MetaDataUpdate.User updateFactory,
       ProjectConfig.Factory projectConfigFactory,
-      ProjectCache projectCache) {
+      ProjectCache projectCache,
+      ApprovalQueryBuilder approvalQueryBuilder) {
     this.user = user;
     this.permissionBackend = permissionBackend;
     this.updateFactory = updateFactory;
     this.projectConfigFactory = projectConfigFactory;
     this.projectCache = projectCache;
+    this.approvalQueryBuilder = approvalQueryBuilder;
   }
 
   @Override
@@ -174,6 +179,25 @@
       dirty = true;
     }
 
+    input.copyCondition = Strings.emptyToNull(input.copyCondition);
+    if (input.copyCondition != null) {
+      try {
+        approvalQueryBuilder.parse(input.copyCondition);
+      } catch (QueryParseException e) {
+        throw new BadRequestException(
+            "unable to parse copy condition. got: " + input.copyCondition, e);
+      }
+      labelTypeBuilder.setCopyCondition(input.copyCondition);
+      dirty = true;
+      if (Boolean.TRUE.equals(input.unsetCopyCondition)) {
+        throw new BadRequestException("can't set and unset copyCondition in the same request");
+      }
+    }
+    if (Boolean.TRUE.equals(input.unsetCopyCondition)) {
+      labelTypeBuilder.setCopyCondition(null);
+      dirty = true;
+    }
+
     if (input.copyAnyScore != null) {
       labelTypeBuilder.setCopyAnyScore(input.copyAnyScore);
       dirty = true;
diff --git a/javatests/com/google/gerrit/acceptance/api/change/StickyApprovalsIT.java b/javatests/com/google/gerrit/acceptance/api/change/StickyApprovalsIT.java
index afe6fb5..389fe03 100644
--- a/javatests/com/google/gerrit/acceptance/api/change/StickyApprovalsIT.java
+++ b/javatests/com/google/gerrit/acceptance/api/change/StickyApprovalsIT.java
@@ -140,6 +140,28 @@
   }
 
   @Test
+  public void stickyWhenCopyConditionIsTrue() throws Exception {
+    try (ProjectConfigUpdate u = updateProject(project)) {
+      u.getConfig().updateLabelType(LabelId.CODE_REVIEW, b -> b.setCopyCondition("is:ANY"));
+      u.save();
+    }
+
+    for (ChangeKind changeKind :
+        EnumSet.of(REWORK, TRIVIAL_REBASE, NO_CODE_CHANGE, MERGE_FIRST_PARENT_UPDATE, NO_CHANGE)) {
+      testRepo.reset(projectOperations.project(project).getHead("master"));
+
+      String changeId = changeKindCreator.createChange(changeKind, testRepo, admin);
+      vote(admin, changeId, 2, 1);
+      vote(user, changeId, 1, -1);
+
+      changeKindCreator.updateChange(changeId, changeKind, testRepo, admin, project);
+      ChangeInfo c = detailedChange(changeId);
+      assertVotes(c, admin, 2, 0, changeKind);
+      assertVotes(c, user, 1, 0, changeKind);
+    }
+  }
+
+  @Test
   public void stickyOnMinScore() throws Exception {
     try (ProjectConfigUpdate u = updateProject(project)) {
       u.getConfig().updateLabelType(LabelId.CODE_REVIEW, b -> b.setCopyMinScore(true));
@@ -162,6 +184,30 @@
   }
 
   @Test
+  public void stickyWhenEitherBooleanConfigsOrCopyConditionAreTrue() throws Exception {
+    try (ProjectConfigUpdate u = updateProject(project)) {
+      u.getConfig()
+          .updateLabelType(
+              LabelId.CODE_REVIEW, b -> b.setCopyCondition("is:MAX").setCopyMinScore(true));
+      u.save();
+    }
+
+    for (ChangeKind changeKind :
+        EnumSet.of(REWORK, TRIVIAL_REBASE, NO_CODE_CHANGE, MERGE_FIRST_PARENT_UPDATE, NO_CHANGE)) {
+      testRepo.reset(projectOperations.project(project).getHead("master"));
+
+      String changeId = changeKindCreator.createChange(changeKind, testRepo, admin);
+      vote(admin, changeId, 2, 1);
+      vote(user, changeId, -2, -1);
+
+      changeKindCreator.updateChange(changeId, changeKind, testRepo, admin, project);
+      ChangeInfo c = detailedChange(changeId);
+      assertVotes(c, admin, 2, 0, changeKind);
+      assertVotes(c, user, -2, 0, changeKind);
+    }
+  }
+
+  @Test
   public void stickyOnMaxScore() throws Exception {
     try (ProjectConfigUpdate u = updateProject(project)) {
       u.getConfig().updateLabelType(LabelId.CODE_REVIEW, b -> b.setCopyMaxScore(true));
diff --git a/javatests/com/google/gerrit/acceptance/rest/project/CreateLabelIT.java b/javatests/com/google/gerrit/acceptance/rest/project/CreateLabelIT.java
index 6a98b8b..f3b07ce 100644
--- a/javatests/com/google/gerrit/acceptance/rest/project/CreateLabelIT.java
+++ b/javatests/com/google/gerrit/acceptance/rest/project/CreateLabelIT.java
@@ -430,6 +430,30 @@
   }
 
   @Test
+  public void createWithCopyCondition() throws Exception {
+    LabelDefinitionInput input = new LabelDefinitionInput();
+    input.values = ImmutableMap.of("+1", "Looks Good", " 0", "Don't Know", "-1", "Looks Bad");
+    input.copyCondition = "is:MAX";
+
+    LabelDefinitionInfo createdLabel =
+        gApi.projects().name(project.get()).label("foo").create(input).get();
+    assertThat(createdLabel.copyCondition).isEqualTo("is:MAX");
+  }
+
+  @Test
+  public void createWithInvalidCopyCondition() throws Exception {
+    LabelDefinitionInput input = new LabelDefinitionInput();
+    input.values = ImmutableMap.of("+1", "Looks Good", " 0", "Don't Know", "-1", "Looks Bad");
+    input.copyCondition = "blarg::asd";
+
+    BadRequestException thrown =
+        assertThrows(
+            BadRequestException.class,
+            () -> gApi.projects().name(project.get()).label("Bar").create(input));
+    assertThat(thrown).hasMessageThat().contains("unable to parse copy condition");
+  }
+
+  @Test
   public void createWithCopyMaxScore() throws Exception {
     LabelDefinitionInput input = new LabelDefinitionInput();
     input.values = ImmutableMap.of("+1", "Looks Good", " 0", "Don't Know", "-1", "Looks Bad");
diff --git a/javatests/com/google/gerrit/acceptance/rest/project/SetLabelIT.java b/javatests/com/google/gerrit/acceptance/rest/project/SetLabelIT.java
index 2e68b54..7980e95 100644
--- a/javatests/com/google/gerrit/acceptance/rest/project/SetLabelIT.java
+++ b/javatests/com/google/gerrit/acceptance/rest/project/SetLabelIT.java
@@ -516,6 +516,54 @@
   }
 
   @Test
+  public void setCopyCondition() throws Exception {
+    configLabel("foo", LabelFunction.NO_OP);
+    assertThat(gApi.projects().name(project.get()).label("foo").get().copyCondition).isNull();
+
+    LabelDefinitionInput input = new LabelDefinitionInput();
+    input.copyCondition = "is:MAX";
+
+    LabelDefinitionInfo updatedLabel =
+        gApi.projects().name(project.get()).label("foo").update(input);
+    assertThat(updatedLabel.copyCondition).isEqualTo("is:MAX");
+  }
+
+  @Test
+  public void setInvalidCopyCondition() throws Exception {
+    configLabel("foo", LabelFunction.NO_OP);
+    assertThat(gApi.projects().name(project.get()).label("foo").get().copyCondition).isNull();
+
+    LabelDefinitionInput input = new LabelDefinitionInput();
+    input.copyCondition = "foo:::bar";
+
+    BadRequestException thrown =
+        assertThrows(
+            BadRequestException.class,
+            () -> gApi.projects().name(project.get()).label("foo").update(input));
+    assertThat(thrown).hasMessageThat().contains("unable to parse copy condition");
+  }
+
+  @Test
+  public void unsetCopyCondition() throws Exception {
+    configLabel("foo", LabelFunction.NO_OP);
+    try (ProjectConfigUpdate u = updateProject(project)) {
+      u.getConfig().updateLabelType("foo", lt -> lt.setCopyCondition("is:MAX"));
+      u.save();
+    }
+    assertThat(gApi.projects().name(project.get()).label("foo").get().copyCondition)
+        .isEqualTo("is:MAX");
+
+    LabelDefinitionInput input = new LabelDefinitionInput();
+    input.unsetCopyCondition = true;
+
+    LabelDefinitionInfo updatedLabel =
+        gApi.projects().name(project.get()).label("foo").update(input);
+    assertThat(updatedLabel.copyCondition).isNull();
+
+    assertThat(gApi.projects().name(project.get()).label("foo").get().copyCondition).isNull();
+  }
+
+  @Test
   public void setCopyMinScore() throws Exception {
     configLabel("foo", LabelFunction.NO_OP);
     assertThat(gApi.projects().name(project.get()).label("foo").get().copyMinScore).isNull();
diff --git a/javatests/com/google/gerrit/server/cache/serialize/entities/LabelTypeSerializerTest.java b/javatests/com/google/gerrit/server/cache/serialize/entities/LabelTypeSerializerTest.java
index ad460cd..614dcf0 100644
--- a/javatests/com/google/gerrit/server/cache/serialize/entities/LabelTypeSerializerTest.java
+++ b/javatests/com/google/gerrit/server/cache/serialize/entities/LabelTypeSerializerTest.java
@@ -35,6 +35,7 @@
           .setIgnoreSelfApproval(!LabelType.DEF_IGNORE_SELF_APPROVAL)
           .setRefPatterns(ImmutableList.of("refs/heads/*", "refs/tags/*"))
           .setDefaultValue((short) 1)
+          .setCopyCondition("is:ANY")
           .setCopyAnyScore(!LabelType.DEF_COPY_ANY_SCORE)
           .setCopyMaxScore(!LabelType.DEF_COPY_MAX_SCORE)
           .setCopyMinScore(!LabelType.DEF_COPY_MIN_SCORE)
@@ -57,7 +58,8 @@
 
   @Test
   public void roundTripWithMinimalValues() {
-    LabelType autoValue = ALL_VALUES_SET.toBuilder().setRefPatterns(null).build();
+    LabelType autoValue =
+        ALL_VALUES_SET.toBuilder().setRefPatterns(null).setCopyCondition(null).build();
     assertThat(deserialize(serialize(autoValue))).isEqualTo(autoValue);
   }
 }
diff --git a/proto/cache.proto b/proto/cache.proto
index b1722b4..90e8952 100644
--- a/proto/cache.proto
+++ b/proto/cache.proto
@@ -445,7 +445,7 @@
 }
 
 // Serialized form of com.google.gerrit.common.data.LabelType.
-// Next ID: 19
+// Next ID: 21
 message LabelTypeProto {
   string name = 1;
   string function = 2; // ENUM as String
@@ -466,6 +466,7 @@
   bool can_override = 17;
   repeated string ref_patterns = 18;
   bool copy_all_scores_if_list_of_files_did_not_change = 19;
+  string copy_condition = 20;
 }
 
 // Serialized form of com.google.gerrit.entities.SubmitRequirement.