diff --git a/geoapi/api/PisApi.php b/geoapi/api/PisApi.php
index 2f81ff2..d4dd5a3 100644
--- a/geoapi/api/PisApi.php
+++ b/geoapi/api/PisApi.php
@@ -26,6 +26,12 @@ class PisApi extends Api {
      */
     public static $routeParameterINames = "/iname/:iname+";
 
+    /**
+     * public string for the patter string parameter
+     * @var string
+     */
+    public static $routParameterIPatter = "ipatter/:ipatter";
+
     /**
      * Keyword for pidList arguments
      * @var string
@@ -38,6 +44,12 @@ class PisApi extends Api {
      */
     public static $keyINameList = "iNameList";
 
+    /**
+     * Keyword for iNameList arguments
+     * @var string
+     */
+    public static $keyIPatter = "searchPatter";
+
     /**
      * max number of pid for each query
      * @var int
@@ -66,22 +78,27 @@ class PisApi extends Api {
      * @return query result as xml
      */
     public function sendPisQuery($queryArgs) {
-        $pidList = \utiliy\ArrayManager::removeEmptyItmes($queryArgs[self::$keyPidList]);        
-        
+        $pidList = \utiliy\ArrayManager::removeEmptyItmes($queryArgs[self::$keyPidList]);
+
         if (array_key_exists(self::$keyINameList, $queryArgs)) {
             $iNameList = \utiliy\ArrayManager::removeEmptyItmes($queryArgs[self::$keyINameList]);
         } else {
             $iNameList = array();
         }
-        
+
+        if (array_key_exists(self::$keyIPatter, $queryArgs)) {
+            $iPatter = trim($queryArgs[self::$keyIPatter]);
+        } else {
+            $iPatter = "*";
+        }
+
         if (count($pidList) < self::$maxPid) {
-            $result = $this->sqlManager->sendPisQuery($pidList, $iNameList);
+            $result = $this->sqlManager->sendPisQuery($pidList, $iNameList,$iPatter);
 
             return $this->serialManager->arrayToPis($result);
         }
         return NULL;
     }
-
 }
 
 ?>
diff --git a/geoapi/database/PisSqlManager.php b/geoapi/database/PisSqlManager.php
index b7b18d4..64e046c 100644
--- a/geoapi/database/PisSqlManager.php
+++ b/geoapi/database/PisSqlManager.php
@@ -61,6 +61,12 @@ class PisSqlManager extends SQLManager {
      * @var string
      */
     private static $orderByTerm = " ORDER BY pid, iName";
+    
+    /**
+     * String for like-Statement fo iValue field
+     * @var string 
+     */
+    private static $iValueLikeTerm = "iValue LIKE ";
 
     /**
      * String for the pid part of the query
@@ -74,6 +80,12 @@ class PisSqlManager extends SQLManager {
      */
     private static $iNameTerm = "iName = ";
 
+    /**
+     * Variable for the max lenght of an valid pattern string
+     * @var int
+     */
+    private static $patterMaxLenght = 30;
+
     /**
      * Default-Constructor
      */
@@ -93,7 +105,7 @@ class PisSqlManager extends SQLManager {
      * @param array $queryArgs
      * @return array [num][assoc]
      */
-    public function sendPisQuery($pidList, $iNameList) {
+    public function sendPisQuery($pidList, $iNameList, $iPatter = "*") {
 
         // build query string
         $query = self::$selectTerm;
@@ -114,15 +126,35 @@ class PisSqlManager extends SQLManager {
             $query .= self::$closeBracket;
         }
 
+        if ($iPatter != "*" && $this->validIPatter($iPatter)) {
+            if ($query != self::$selectTerm) {
+                $query .= self::$andTerm;
+            }
+            $query .= self::$iValueLikeTerm ."'%$iPatter%'";
+        }
+        
         if ($query == self::$selectTerm) {
             $query = self::$selectAllTerm;
         }
 
         $query .= self::$orderByTerm;
+
         // send query
         return $this->query($query);
     }
 
+    /**
+     * Method check if the input value for pattern string is valid
+     * @param string $domain
+     * @return boolean
+     */
+    private function validIPatter($iPatter) {
+        if (\utiliy\StringManager::validSQLString($iPatter) && ctype_alnum($iPatter) && strlen($iPatter) <= self::$patterMaxLenght) {
+            return TRUE;
+        }
+        return FALSE;
+    }
+
 }
 
 ?>
diff --git a/geoapi/service/pis/index.php b/geoapi/service/pis/index.php
index d9e3e17..c86b337 100644
--- a/geoapi/service/pis/index.php
+++ b/geoapi/service/pis/index.php
@@ -10,16 +10,18 @@ $headers = apache_request_headers();
 $app = new \api\PisApi($headers);
 
 // HTTP-Get-Method
-$app->get(\api\PisApi::$routeParameterPids . \api\PisApi::$routeParameterINames, function ($pid, $iNames = array()) use ($app) {
+$app->get(\api\PisApi::$routeParameterPids . \api\PisApi::$routeParameterINames . \api\PisApi::$routParameterIPatter, function ($pid, $iNames = array(), $iPatter = "*") use ($app) {
             $queryArgs = array();
             $queryArgs[\api\PisApi::$keyPidList] = $pid;
             $queryArgs[\api\PisApi::$keyINameList] = $iNames;
+            $queryArgs[\api\PisApi::$keyIPatter] = $iPatter;
             echo $app->sendPisQuery($queryArgs);
         });
 
-$app->get(\api\PisApi::$routeParameterPids, function ($pid) use ($app) {
+$app->get(\api\PisApi::$routeParameterPids . \api\PisApi::$routParameterIPatter, function ($pid, $iPatter = "*") use ($app) {
             $queryArgs = array();
             $queryArgs[\api\PisApi::$keyPidList] = $pid;
+            $queryArgs[\api\PisApi::$keyIPatter] = $iPatter;
             echo $app->sendPisQuery($queryArgs);
         });