diff --git a/src/main/java/com/sangchu/patent/controller/PatentController.java b/src/main/java/com/sangchu/patent/controller/PatentController.java
index 9614c92..d83941e 100644
--- a/src/main/java/com/sangchu/patent/controller/PatentController.java
+++ b/src/main/java/com/sangchu/patent/controller/PatentController.java
@@ -12,11 +12,6 @@
 import org.springframework.web.bind.annotation.RequestMapping;
 import org.springframework.web.bind.annotation.RequestParam;
 import org.springframework.web.bind.annotation.RestController;
-import org.xml.sax.SAXException;
-
-import javax.xml.parsers.ParserConfigurationException;
-import java.io.IOException;
-import java.net.URISyntaxException;
 
 @RestController
 @RequiredArgsConstructor
@@ -30,7 +25,7 @@ public ResponseEntity<BaseResponse<Boolean>> checkPatent(
             @RequestParam("keyword") String keyword,
             @RequestParam("custom") String custom,
             @RequestParam("storeNm") String storeNm
-    ) throws URISyntaxException, IOException, ParserConfigurationException, SAXException {
+    ) {
         PreferNameCreateDto preferName = PreferNameCreateDto.builder().keyword(keyword).custom(custom).name(storeNm).build();
         preferService.createPreferName(preferName);
         Boolean response = patentService.checkDuplicated(storeNm);
diff --git a/src/main/java/com/sangchu/patent/service/PatentService.java b/src/main/java/com/sangchu/patent/service/PatentService.java
index 96ce776..63f7320 100644
--- a/src/main/java/com/sangchu/patent/service/PatentService.java
+++ b/src/main/java/com/sangchu/patent/service/PatentService.java
@@ -2,24 +2,25 @@
 
 import com.sangchu.global.exception.custom.CustomException;
 import com.sangchu.global.util.statuscode.ApiStatus;
+
 import lombok.RequiredArgsConstructor;
 import lombok.extern.slf4j.Slf4j;
+
 import org.springframework.beans.factory.annotation.Value;
+
 import org.springframework.http.HttpStatus;
 import org.springframework.http.ResponseEntity;
 import org.springframework.stereotype.Service;
 import org.springframework.web.client.RestTemplate;
 import org.w3c.dom.Document;
 import org.w3c.dom.NodeList;
-import org.xml.sax.SAXException;
+
 
 import javax.xml.parsers.DocumentBuilder;
 import javax.xml.parsers.DocumentBuilderFactory;
-import javax.xml.parsers.ParserConfigurationException;
+
 import java.io.ByteArrayInputStream;
-import java.io.IOException;
 import java.net.URI;
-import java.net.URISyntaxException;
 import java.net.URLEncoder;
 import java.nio.charset.StandardCharsets;
 
@@ -27,34 +28,44 @@
 @RequiredArgsConstructor
 @Slf4j
 public class PatentService {
-    @Value("${kipris.service-key}")
-    private String serviceKey;
-
-    @Value("${kipris.request-url}")
-    private String requestUrl;
+	@Value("${kipris.service-key}")
+	private String serviceKey;
 
-    private final RestTemplate restTemplate = new RestTemplate();
+	@Value("${kipris.request-url}")
+	private String requestUrl;
 
-    public Boolean checkDuplicated(String storeNm) throws URISyntaxException, IOException, ParserConfigurationException, SAXException {
-        try {
-            String url = requestUrl + "?word=" + URLEncoder.encode(storeNm, StandardCharsets.UTF_8) + "&ServiceKey=" + serviceKey;
-            ResponseEntity<String> response = restTemplate.getForEntity(new URI(url), String.class);
+	private final RestTemplate restTemplate = new RestTemplate();
 
-            if (response.getStatusCode() != HttpStatus.OK) return false;
+	public Boolean checkDuplicated(String storeNm) {
+		try {
+			String url =
+				requestUrl + "?trademarkName=" + URLEncoder.encode(storeNm, StandardCharsets.UTF_8) + "&accessKey="
+					+ serviceKey;
+			ResponseEntity<String> response = restTemplate.getForEntity(new URI(url), String.class);
 
-            String xml = response.getBody();
-            DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
-            DocumentBuilder builder = factory.newDocumentBuilder();
+			if (response.getStatusCode() != HttpStatus.OK)
+				return false;
 
-            Document document = builder.parse(new ByteArrayInputStream(xml.getBytes("UTF-8")));
+			String xml = response.getBody();
 
-            String totalCount = document.getElementsByTagName("totalCount").item(0).getTextContent();
+			DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
+			DocumentBuilder builder = factory.newDocumentBuilder();
 
-            log.info("totalCount: " + totalCount);
+			Document document = builder.parse(new ByteArrayInputStream(xml.getBytes("UTF-8")));
 
-            return Integer.parseInt(totalCount) > 0;
-        } catch (Exception e) {
-            throw new CustomException(ApiStatus._PATENT_CHECK_FAIL);
-        }
-    }
+			String totalCountText = document.getElementsByTagName("TotalSearchCount").item(0).getTextContent();
+			NodeList applicationStatusNodeList = document.getElementsByTagName("ApplicationStatus");
+			boolean patentCheck = false;
+			for (int i = 0; i < applicationStatusNodeList.getLength(); i++) {
+				String applicationStatus = applicationStatusNodeList.item(i).getTextContent();
+				if ("등록".equals(applicationStatus) || "출원".equals(applicationStatus)) {
+					patentCheck = true;
+					break;
+				}
+			}
+			return patentCheck || Integer.parseInt(totalCountText) > 0;
+		} catch (Exception e) {
+			throw new CustomException(ApiStatus._PATENT_CHECK_FAIL);
+		}
+	}
 }