Last year, the federal government issued more than 50,000 patents, granting inventors the right, for 17 years, to exclude all others from making, using, or selling their inventions within the United States. But — as many inventors have found out after an average two-year wait and about $1,200 in legal and other fees — patents may be worth no more than
ISAAC MENDELOVICH KNOWS WELL THE ROAD from center city to Crystal City — a three-hour trek southward to a place just outside of Washington where modern-day prospectors, squinting at computer terminals, spend their days digging for the mother lode. But in Crystal City, where block-long, seven-foot-high stacks of documents chronicle past finds and near misses, there is an ironic