Update app.py

app.py

@@ -168,14 +168,19 @@ def setup_retrieval_pipeline(file_path, persist_dir, api_key):
 
     return retrieval_chain
 
+def extract_patent_number(url):
+    pattern = r"/patent/([A-Z]{2}\d+)"
+    match = re.search(pattern, url)
+    return match.group(1) if match else None
+
 if __name__ == "__main__":
     st.set_page_config(
         page_title="Patent Chat: Google Patents Chat Demo",
-        page_icon="📜",
+        page_icon="",
         layout="wide",
         initial_sidebar_state="expanded",
     )
-    st.header("Patent Chat: Google Patents Chat Demo")
+    st.header(" Patent Chat: Google Patents Chat Demo")
 
     # Input for Google Patent Link
     patent_link = st.text_area(
@@ -206,7 +211,7 @@ if __name__ == "__main__":
         # File handling
         pdf_path = os.path.join(tempfile.gettempdir(), f"{patent_number}.pdf")
         if not os.path.isfile(pdf_path):
-            with st.spinner("Downloading patent file..."):
+            with st.spinner(" Downloading patent file..."):
                 try:
                     pdf_path = download_pdf(patent_number)
                     st.write(f"\u2705 File downloaded: {pdf_path}")