diff --git a/packages/xod-project/src/internal/patchPathUtils.js b/packages/xod-project/src/internal/patchPathUtils.js
index c0f9b26e..fb907cfb 100644
--- a/packages/xod-project/src/internal/patchPathUtils.js
+++ b/packages/xod-project/src/internal/patchPathUtils.js
@@ -22,14 +22,18 @@ const alphanumericWithHypens = `${alphanumeric}(-${alphanumeric})*`;
 const alphanumericWithHypensAndCommans = `${alphanumeric}(-${alphanumeric}|,${alphanumeric})*`;
 
 // -$5
-const variadicLevel = '-\\$\\d';
+const variadicLevel = '(-\\$\\d+){0,1}';
 
 // (foo-2-bar,foo-5-bar)
 const types = `(\\(${alphanumericWithHypensAndCommans}\\)){0,1}`;
 
 // foo2(foo-2-bar,foo-5-bar)-$5
 const patchBaseNameRegExp = new RegExp(
-  `^${alphanumericWithHypens}(${types}|${variadicLevel})$`
+  `^${alphanumericWithHypens}${types}${variadicLevel}$`
+);
+
+const specializationPatchBasenameRegExp = new RegExp(
+  `^${alphanumericWithHypens}\\(${alphanumericWithHypensAndCommans}\\)${variadicLevel}$`
 );
 
 // foo-2-bar
@@ -116,3 +120,8 @@ export const isWatchPatchPath = R.test(/^xod\/core\/watch$/);
 
 // :: LibName -> Boolean
 export const isBuiltInLibName = R.equals(TERMINALS_LIB_NAME);
+
+// :: PatchPath -> Boolean
+export const isSpecializationPatchBasename = R.test(
+  specializationPatchBasenameRegExp
+);
diff --git a/packages/xod-project/src/node.js b/packages/xod-project/src/node.js
index 66e58565..4b967fcf 100644
--- a/packages/xod-project/src/node.js
+++ b/packages/xod-project/src/node.js
@@ -9,6 +9,8 @@ import {
   isOutputTerminalPath,
   getTerminalDataType,
   isPathLocal,
+  getBaseName,
+  isSpecializationPatchBasename,
 } from './patchPathUtils';
 
 /**
@@ -222,6 +224,15 @@ export const isLocalNode = def(
   R.compose(isPathLocal, getNodeType)
 );
 
+/**
+ * Checks that Node have a NodeType referenced to the specialization Patch.
+ * E.G. `@/if-else(number)`
+ */
+export const isSpecializationNode = def(
+  'isSpecializationNode :: Node -> Boolean',
+  R.compose(isSpecializationPatchBasename, getBaseName, getNodeType)
+);
+
 // =============================================================================
 //
 // Pins
diff --git a/packages/xod-project/src/patchPathUtils.js b/packages/xod-project/src/patchPathUtils.js
index 4054c3ec..5e7cc641 100644
--- a/packages/xod-project/src/patchPathUtils.js
+++ b/packages/xod-project/src/patchPathUtils.js
@@ -14,6 +14,7 @@ export {
   isLocalMarker,
   isValidIdentifier,
   isValidPatchBasename,
+  isSpecializationPatchBasename,
   isPathLocal,
   isPathLibrary,
   isLibName,
@@ -59,6 +60,13 @@ export const validatePath = Tools.errOnFalse(
  */
 export const getBaseName = R.compose(R.last, R.split('/'));
 
+// :: PatchPath -> Identifier
+export const getBaseNameWithoutTypes = R.compose(
+  R.head,
+  R.split('('),
+  getBaseName
+);
+
 /**
  * @function getLibraryName
  * @param {string} path
diff --git a/packages/xod-project/test/patchPathUtils.spec.js b/packages/xod-project/test/patchPathUtils.spec.js
index e9119e3f..c08736d5 100644
--- a/packages/xod-project/test/patchPathUtils.spec.js
+++ b/packages/xod-project/test/patchPathUtils.spec.js
@@ -67,6 +67,12 @@ describe('PatchPathUtils', () => {
         PatchPathUtils.isValidPatchBasename('foo(super-string,number)')
       );
 
+      // Valid basenames with variadic level
+      assert.isTrue(PatchPathUtils.isValidPatchBasename('lower-kebab-123-$3'));
+      assert.isTrue(
+        PatchPathUtils.isValidPatchBasename('foo(super-string,number)-$2')
+      );
+
       // Invalid common patch basenames
       assert.isFalse(PatchPathUtils.isValidPatchBasename('-'));
       assert.isFalse(PatchPathUtils.isValidPatchBasename('a-'));
@@ -84,6 +90,16 @@ describe('PatchPathUtils', () => {
       assert.isFalse(PatchPathUtils.isValidPatchBasename('foo--bar(string)'));
       assert.isFalse(PatchPathUtils.isValidPatchBasename('(string)'));
       assert.isFalse(PatchPathUtils.isValidPatchBasename('(string,number)'));
+
+      // Invalid basenames with variadic level
+      assert.isFalse(PatchPathUtils.isValidPatchBasename('foo-$'));
+      assert.isFalse(PatchPathUtils.isValidPatchBasename('foo-$a'));
+      assert.isFalse(
+        PatchPathUtils.isValidPatchBasename('foo(super-string,number)-$')
+      );
+      assert.isFalse(
+        PatchPathUtils.isValidPatchBasename('foo(super-string,number)-$a')
+      );
     });
   });
   describe('isValidPatchPath', () => {