diff --git a/src/main/java/com/interplug/qcast/biz/estimate/EstimateService.java b/src/main/java/com/interplug/qcast/biz/estimate/EstimateService.java
index 4779b336..f7737b57 100644
--- a/src/main/java/com/interplug/qcast/biz/estimate/EstimateService.java
+++ b/src/main/java/com/interplug/qcast/biz/estimate/EstimateService.java
@@ -1504,6 +1504,20 @@ public class EstimateService {
               } while (!prevName.equals(itemName) && itemName.contains("&"));
             }
 
+            // 3. 엑셀/PDF 폰트(MS PGothic, BIZUDPGothic) 미지원 특수문자 치환
+            // Ⓡ(U+24C7) 등 Enclosed Alphanumerics는 일본어 폰트가 지원하므로 깨지지 않음
+            itemName = itemName
+                .replace("\u00AE", "\u24C7")  // ® → Ⓡ
+                .replace("\u2122", "(TM)")    // ™ → (TM)
+                .replace("\u00A9", "(C)")     // © → (C)
+                .replace("\u2013", "-")       // – (en dash) → -
+                .replace("\u2014", "-")       // — (em dash) → -
+                .replace("\u2018", "'")       // ' → '
+                .replace("\u2019", "'")       // ' → '
+                .replace("\u201C", "\"")      // " → "
+                .replace("\u201D", "\"")      // " → "
+                .replace("\u2026", "...");    // … → ...
+
             itemResponse.setItemName(itemName);
           } catch (Exception e) {
             log.warn("Excel itemName processing failed: {}", itemName);