An inventor retained an attorney to help the client file a patent. The inventor told the attorney that time was of the essence because there were competitors with similar ideas. The attorney and the inventor signed a retainer agreement that set forth the attorneys hourly rate and agreed that the attorney would bill the inventor monthly. After spending significant time researching the clients potential patent, the attorney concluded that the inventor had a reasonable chance of success. The attorney sent a bill to the client, but through no fault of clients, the bills were not delivered (and were not returned to the attorney). During the six months that the attorney was not paid, the attorney did no further work on the investors potential patent. In month seven, the inventor called the attorney and asked if the patent had been awarded. The attorney explained that the attorney had not worked on the patent during the past six months because the clients bill was outstanding. The inventor hand-delivered a check that same day. Upon receiving the investors check, the attorney resumed work on the patent. The attorney checked and saw that no one had filed a similar or identical patent during the past six months. The attorney filed the patent application and took the necessary steps so that the inventor could issue her invention with the label "patent pending."Is the attorney subject to discipline?