I understand the need for patents as the vehicle to protect the ideas of companies and people. You stated patents are good for the consumer. Perhaps, but patent battles are never good for the consumer.
However, in this case the consumer loses. The watches are not for sale. Watches out of warranty cannot be fixed. The consumer loses.
If the company owning the patent wins, the consumer will be faced with higher costs. The costs paid in penalties, royalties and legal fees are never paid by the company losing the patent battle. The costs are paid by the consumer. The consumer will no longer has a useful feature or the prices for the products are higher.