Fix search_patents route not respecting number of results per query

app.py

@@ -73,15 +73,18 @@ async def query_google_patents(browser: Browser, q: str, n_results: int = 10):
     PATENT_ID_REGEX = r"\b[A-Z]{2}\d{6,}(?:[A-Z]\d?)?\b"
 
     items = await page.locator("search-result-item").all()
-    matches = []
+    id_matches = []
     for item in items:
         all_text = " ".join(await item.locator("span").all_inner_texts())
         found = re.findall(PATENT_ID_REGEX, all_text)
         if found:
-            matches.append(found[0])
+            id_matches.append(found[0])
 
     await context.close()
-    return matches
+
+    patents = [{"href": f"https://patents.google.com/patent/{id}/en", "id": id}
+               for id in id_matches]
+    return patents[:n_results]
 
 
 async def query_brave_search(browser: Browser, q: str, n_results: int = 10):
@@ -102,6 +105,10 @@ async def query_brave_search(browser: Browser, q: str, n_results: int = 10):
 
     results_cards = await page.locator('.snippet').all()
 
+    if len(results_cards) == 0:
+        logging.warning(f"No results for query: {q}")
+        logging.warning(await page.content())
+
     results = []
 
     for result in results_cards:
@@ -141,11 +148,12 @@ async def search_patents(params: APISearchParams) -> APIPatentResults:
         except Exception as e:
             logging.error(
                 f"Failed to query Google Patents with query `{q}`: {e}")
-    return APIPatentResults(results=[{"href": f"https://patents.google.com/patent/{id}/en", "id": id} for id in results], error=None)
+    return APIPatentResults(results=results, error=None)
 
 
 @app.post("/search_brave")
 async def search_brave(params: APISearchParams) -> APIBraveResults:
+    """Searches brave search for the specified queries and returns the found documents."""
     results = []
     for q in params.queries:
         logging.info(f"Searching Brave search with query `{q}`")